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The Judaizers were a faction of the Jewish Christians, both of Jewish and non-Jewish origins, who regarded the Levitical laws of the Old Testament as still binding on all Christians. They tried to enforce Jewish circumcision upon the Gentile converts to early Christianity and were strenuously opposed and criticized for their behavior by the Apostle Paul, who employed many of his epistles to refute their doctrinal errors.
The term is derived from the Koine Greek word Ἰουδαΐζειν (Ioudaizein), used once in the Greek New Testament (Galatians 2:14), when Paul the Apostle publicly challenged the Apostle Peter for compelling Gentile converts to early Christianity to "judaize". This episode is known as the incident at Antioch.
Most Christians believe that much of the Old Covenant has been superseded, and many believe it has been completely abrogated and replaced by the Law of Christ. The Christian debate over Judaizing began in the lifetime of the apostles, notably at the Council of Jerusalem and the incident at Antioch. It has been carried on parallel to continuing debates about Paul the Apostle and Judaism, Protestant views of the Ten Commandments, and Christian ethics.
The meaning of the verb Judaize, from which the noun Judaizer is derived, can only be derived from its various historical uses. Its biblical meaning must also be inferred and is not clearly defined beyond its obvious relationship to the word "Jew." The Anchor Bible Dictionary, for example, says: "The clear implication is that gentiles are being compelled to live according to Jewish customs."
In the Early Church
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The Council of Jerusalem is generally dated to 48 AD, roughly 15 to 25 years after the crucifixion of Jesus, between 26 and 36 AD. Acts 15 and Galatians 2 both suggest that the meeting was called to debate whether or not male Gentiles who were converting to become followers of Jesus were required to become circumcised; the rite of circumcision was considered execrable and repulsive during the period of Hellenization of the Eastern Mediterranean, and was especially adversed in Classical civilization both from ancient Greeks and Romans, which instead valued the foreskin positively.
Before Paul's conversion, Christianity was part of Second Temple Judaism. Gentiles who wished to join the early Christian movement, which at the time comprised mostly Jewish followers, were expected to convert to Judaism, which likely meant submission to adult male circumcision for the uncircumcised, following the dietary restrictions of kashrut, and more. During the time period there were also "partial converts", such as gate proselytes and God-fearers, i.e. Greco-Roman sympathizers which made an allegiance to Judaism but refused to convert and therefore retained their Gentile (non-Jewish) status, hence they were uncircumcised and it wasn't required for them to follow any of the commandments of the Mosaic Law.
The inclusion of Gentiles into early Christianity posed a problem for the Jewish identity of some of the early Christians: the new Gentile converts were not required to be circumcised nor to observe the Mosaic Law. Circumcision in particular was regarded as a token of the membership of the Abrahamic covenant, and the most traditionalist faction of Jewish Christians (i.e., converted Pharisees) insisted that Gentile converts had to be circumcised as well.[Acts 15:1] Paul insisted that faith in Christ (see also Faith or Faithfulness) was sufficient for salvation, therefore the Mosaic Law wasn't binding for the Gentiles.
In the New Testament, the Judaizers were a group of Jewish Christians who insisted that their co-religionists should follow the Mosaic Law and that Gentile converts to Christianity must first be circumcised (i.e. become Jewish through the ritual of a proselyte). Although such repressive and legalistic requirements may have made Christianity a much less appealing religious choice for the vast majority of Gentiles, the evidence afforded in Paul's Epistle to the Galatians exhibits that, initially, a significant number of the Galatian Gentile converts appeared disposed to adopt these restrictions; indeed, Paul strenuously labors throughout the letter to dissuade them from doing so (cf. Galatians 4:21, Galatians 5:2–4, Galatians 5:6–12, Galatians 6:12–15).
Paul was severely critical of the Judaizers within the Early Church and harshly reprimanded them for their doctrines and behavior. Paul saw the Judaizers as being both dangerous to the spread of the Gospel and propagators of grievous doctrinal errors. Many of his letters included in the New Testament (the Pauline epistles) contain considerable material disputing the view of this faction and condemning its practitioners. Paul publicly condemned Peter for his seemingly ambivalent reaction to the Judaizers, embracing them publicly in places where their preaching was popular while holding the private opinion that their doctrines were erroneous (cf. Philippians 3:2–3, 1 Corinthians 7:17–21, 1 Corinthians 9:20–23, Romans 2:17–29, Romans 3:9–28, Romans 5:1–11, Titus 1:10–16).
That Gentile Christians should obey the Law of Moses was the assumption of some Jewish Christians in the Early Church, as represented by the group of Pharisees who had converted to Christianity in Acts 15:5. Paul opposed this position, concluding that Gentiles did not need to obey to the entire Law of Moses in order to become Christians. The conflict between Paul and his Judaizing opponents over this issue came to a head with the Council of Jerusalem. According to the account given in Acts 15, it was determined by the Great Commission that Gentile converts to Christianity did not have to go through circumcision; but in addressing the second question as to whether or not they should obey the Torah, James the Just, brother of Jesus encouraged the Gentiles to "abstain from things sacrificed to idols, and from blood, and from things strangled, and from fornication" (Acts 15:19–29).
Paul also addressed this question in his Epistle to the Galatians, in which he condemned those who insisted that circumcision had to be followed for justification as "false believers" (Galatians 2:4):
But even Titus, who was with me, was not compelled to be circumcised, though he was a Greek. But because of false believers secretly brought in, who slipped in to spy on the freedom we have in Christ Jesus, so that they might enslave us – we did not submit to them even for a moment, so that the truth of the gospel might always remain with you. And from those who were supposed to be acknowledged leaders (what they actually were makes no difference to me; God shows no partiality) – those leaders contributed nothing to me. On the contrary, when they saw that I had been entrusted with the gospel for the uncircumcised, just as Peter had been entrusted with the gospel for the circumcised (for he who worked through Peter making him an apostle to the circumcised also worked through me in sending me to the Gentiles), and when James and Cephas and John, who were acknowledged pillars, recognized the grace that had been given to me, they gave to Barnabas and me the right hand of fellowship, agreeing that we should go to the Gentiles and they to the circumcised. They asked only one thing, that we remember the poor, which was actually what I was eager to do. [...] We ourselves are Jews by birth and not Gentile sinners; yet we know that a person is justified not by the works of the law but through faith in Jesus Christ. And we have come to believe in Christ Jesus, so that we might be justified by faith in Christ, and not by doing the works of the law, because no one will be justified by the works of the law.
Also Paul warned the early Galatian church that gentile Christians who submit to circumcision will be alienated from Christ: "Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing. And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law. You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace." (Galatians 5:2–4).
The Catholic Encyclopedia notes: "Paul, on the other hand, not only did not object to the observance of the Mosaic Law, as long as it did not interfere with the liberty of the Gentiles, but he conformed to its prescriptions when occasion required (1 Corinthians 9:20). Thus he shortly after circumcised Timothy (Acts 16:1–3), and he was in the very act of observing the Mosaic ritual when he was arrested at Jerusalem (Acts 21:26 sqq.)."
Paul, who called himself "Apostle to the Gentiles", criticised the practice of circumcision, perhaps as an entrance into the New Covenant of Jesus. In the case of Timothy, whose mother was a Jewish Christian but whose father was a Greek, Paul personally circumcised him "because of the Jews" that were in town.[Acts 16:1–3] Some believe that he appeared to praise its value in Romans 3:1–2, yet later in Romans 2 we see his point. In 1 Corinthians 9:20–23 he also disputes the value of circumcision. Paul made his case to the Christians at Rome[Romans 2:25–29] that circumcision no longer meant the physical, but a spiritual practice. He also wrote: "Circumcision is nothing and uncircumcision is nothing. Keeping God's commands is what counts."[1 Cor. 7:19]
Later Paul more explicitly denounced the practice, rejecting and condemning those Judaizers who promoted circumcision to Gentile Christians. He accused them of turning from the Spirit to the flesh: "Are you so foolish, that, whereas you began in the Spirit, you would now be made perfect by the flesh?"[Gal. 3:3] Paul warned that the advocates of circumcision were "false brothers".[Gal. 2:4] He accused the advocates of circumcision of wanting to make a good showing in the flesh,[Gal 6:12] and of glorying or boasting of the flesh.[Gal. 3:13] Paul instead stressed a message of salvation through faith in Christ opposed to the submission under the Mosaic Law that constituted a New Covenant with God, which essentially provides a justification for Gentiles from the harsh edicts of the Law, a New Covenant that didn't require circumcision (see also Justification by faith, Pauline passages supporting antinomianism, Abrogation of Old Covenant laws).
His attitude towards circumcision varies between his outright hostility to what he calls "mutilation" in Philippians 3:2–3 to praise in Romans 3:1–2. However, such apparent discrepancies have led to a degree of skepticism about the reliability of Acts. Baur, Schwanbeck, De Wette, Davidson, Mayerhoff, Schleiermacher, Bleek, Krenkel, and others have opposed the authenticity of the Acts; an objection is drawn from the discrepancy between Acts 9:19–28 and Gal. 1:17–19. Some believe that Paul wrote the entire Epistle to the Galatians attacking circumcision, saying in chapter five: "Behold, I Paul say unto you, if ye be circumcised, Christ shall profit you nothing."[Gal. 5:2]
The division between the Jews who followed the Mosaic Law and were circumcised and the Gentiles who were uncircumcised was highlighted in his Epistle to the Galatians:
On the contrary, when they saw that I had been entrusted with the gospel for the uncircumcised, just as Peter had been entrusted with the gospel for the circumcised (for he who worked through Peter making him an apostle to the circumcised also worked through me in sending me to the Gentiles), and when James and Cephas and John, who were acknowledged pillars, recognized the grace that had been given to me, they gave to Barnabas and me the right hand of fellowship, agreeing that we should go to the Gentiles and they to the circumcised.
It is absurd to profess Christ Jesus, and to Judaize. For Christianity did not embrace Judaism, but Judaism Christianity, that so every tongue which believeth might be gathered together to God. (Roberts-Donaldson Translation).
There are several direct interpolations by a later forger regarding anti-Judaizing in Ignatius's epistles that are considered authentic, it can be assumed the redactor was either trying to build upon Ignatius' positions or responsible for what is perceived as Ignatius' anti-Judaizing altogether.
Judaizing teachers are strongly condemned in the Epistle of Barnabas. (Although it did not become part of the Christian Biblical canon, it was widely circulated among Christians in the first two centuries and is part of the Apostolic Fathers.) Whereas Paul acknowledged that the Law of Moses and its observance were good when used correctly ("the law is good, if one uses it lawfully", 1 Tim 1:8), the Epistle of Barnabas condemns most Jewish practices, claiming that Jews had grossly misunderstood and misapplied the Law of Moses.
Justin Martyr (about 140) distinguishes two kinds of Jewish Christians: those who observe the Law of Moses, but do not require its observance of others — with these he would hold communion – and those who believe the Mosaic law to be obligatory on all, whom he considers heretics (Dialogue with Trypho 47).
The Council of Laodicea of around 365 decreed 59 laws, #29:
Christians must not judaize by resting on the Sabbath, but must work on that day, rather honouring the Lord's Day; and, if they can, resting then as Christians. But if any shall be found to be judaizers, let them be anathema from Christ. (Percival Translation).
According to Eusebius' History of the Church 4.5.3-4: the first 15 Bishops of Jerusalem were "of the circumcision", although this in all likelihood is simply stating that they were Jewish Christians (as opposed to gentile Christians), and that they observed biblical circumcision and thus likely the rest of Torah as well.
The influence of the Judaizers in the church diminished significantly after the destruction of Jerusalem, when the Jewish-Christian community at Jerusalem was dispersed by the Romans during the First Jewish–Roman War. The Romans also dispersed the Jewish leadership in Jerusalem in 135 during the Bar Kokhba Revolt. Traditionally it is believed the Jerusalem Christians waited out the Jewish–Roman wars in Pella in the Decapolis. These setbacks however didn't necessarily mean an end to Jewish Christianity, any more than Valerian's Massacre of 258, (when he killed all Christian bishops, presbyters, and deacons, including Pope Sixtus II and Antipope Novatian and Cyprian of Carthage), meant an end to Roman Christianity.
The Latin verb iudaizare is used once in the Vulgate where the Greek verb ioudaizein occurs at Galatians 2:14. Augustine in his Commentary on Galatians, describes Paul's opposition in Galatia as those qui gentes cogebant iudaizare – "who thought to make the Gentiles live in accordance with Jewish customs."
The Sect of Zacharias the Jew
Skhariya or Zacharias the Jew from Caffa led a sect of Judaizers in Russia. In 1480, Grand Prince Ivan III invited some of his prominent adherents to visit Moscow. The Judaizers enjoyed the support of high-ranking officials, statesmen, merchants, Yelena Stefanovna (wife of Ivan the Young, heir to the throne) and Ivan's favorite deacon and diplomat Fyodor Kuritsyn. The latter even decided to establish his own club in the mid-1480s. However, in the end Ivan III renounced his ideas of secularization and allied with the Orthodox Christian clergy. The struggle against the adherents was led by hegumen Joseph Volotsky and his followers (иосифляне, iosiflyane or Josephinians) and Archbishop Gennady of Novgorod. After uncovering adherents in Novgorod around 1487, Gennady wrote a series of letters to other churchmen over several years calling on them to convene sobors ("church councils") with the aim "not to debate them, but to burn them." Such councils were held in 1488, 1490, 1494 and 1504. The councils outlawed religious and non-religious books and initiated their burning, sentenced a number of people to death, sent adherents into exile, and excommunicated them. In 1491, Zacharias the Jew was executed in Novgorod by the order of Ivan III.
At various times since then, the Russian Orthodox Church has described several related Spiritual Christian groups as having a Judaizing character; the accuracy of this label – which was influenced by the early Christian polemics against Judaizers – has been disputed. The most famous of the Russian Empire's Judaizing sects were the Karaimites or Karaimizing-Subbotniks like Alexander Zaïd who successfully settled in the Holy Land.
The Epistle to the Galatians strongly influenced Martin Luther at the time of the Protestant Reformation because of its exposition of justification by grace. Nevertheless, various sects of Messianic Jews such as Jews for Jesus have managed to stake out territory for themselves in the Protestant camp.
This behavior was particularly persecuted from 1300 to 1800 during the Spanish and Portuguese Inquisitions, using as a basis the many references in the Pauline epistles regarding the "Law as a curse" and the futility of relying on the Law for attaining salvation, known as legalism. Thus, in spite of Paul's agreement at the Council of Jerusalem, gentile Christianity came to understand that any Torah Laws (with the exception of the Ten Commandments) were anathema, not only to gentile Christians but also to Christians of Jewish extraction. Under the Spanish Inquisition, the penalty to a converted Jew for "Judaizing" was usually death by burning.
The Spanish word Judaizante was applied both to Jewish conversos to Catholicism who practiced Judaism secretly and sometimes to Jews who had not converted, in Spain and the New World at the time of the Spanish Inquisition.
The term "Judaizers" was used by the Spanish Inquisition and the inquisitions established in Mexico City, Lima, and Cartagena de Indias for Conversos (also termed Marranos) accused of continuing to observe the Jewish religion, as Crypto-Jews. Entry of Portuguese New Christians into Spain and the Spanish realms occurred during the Union of Crowns of Spain and Portugal, 1580–1640, when both kingdoms and their overseas empires were held by the same monarch. The Bnei Anusim are modern day Hispanic Judaizers.
The Coptic, Ethiopian and Eritrean Orthodox Churches all continue to practice male circumcision. but critics charge that the continuation of this practice may reflect ancient Egyptian influences or be a response to the culture of the Islamic majority (see also Abrahamic religions and Circumcision controversy in early Christianity). In Torah-submissive Christian groups which include the Ethiopian Orthodox church, dietary laws and Saturday Sabbath are observed as well.
A list of notable contemporary groups of Judaizers includes:
- Assemblies of Yahweh
- Black Hebrew Israelites
- British Israelites
- Christian Identitists
- Hebrew Roots Movement
- Messianic Judaism
- Sacred Name Movement
- B'nai Moshe
- Bene Ephraim
- Bnei Menashe
- Jews of San Nicandro
- Szekler Sabbatarians
- Seventh-day Adventist Church
- Herbert W. Armstrong
- Black Hebrew Israelites
- British Israelism
- Christian Identity
- Christian–Jewish reconciliation
- Christian observances of Jewish holidays
- Christian Zionism
- Antisemitism in Christianity
- Christianity and Judaism
- John Chrysostom#Homilies
- Church of Christ With the Elijah Message
- Council of Jamnia
- Dual-covenant theology
- Expounding of the Law
- Groups claiming affiliation with Israelites
- Hebrew Catholics
- Hebrew Roots
- Hellenistic Judaism
- House of Joseph (LDS Church)
- Jehovah's Witnesses
- Jewish Christianity
- Jewish holidays
- Jewish views on religious pluralism
- Judaism and Mormonism
- Limpieza de sangre
- List of Sabbath-keeping churches
- Messianic Judaism
- Mormonism and Christianity
- Sabbath in Christianity
- Sabbath in seventh-day churches
- Sacred Name Movement
- Szekler Sabbatarians
- Cross, F. L.; Livingstone, E. A., eds. (2005). The Oxford Dictionary of the Christian Church (3rd Revised ed.). Oxford: Oxford University Press. p. 912. doi:10.1093/acref/9780192802903.001.0001. ISBN 978-0-19-280290-3.
- Dunn, James D. G. (Autumn 1993). Reinhartz, Adele (ed.). "Echoes of Intra-Jewish Polemic in Paul's Letter to the Galatians". Journal of Biblical Literature. Society of Biblical Literature. 112 (3): 459–477. doi:10.2307/3267745. ISSN 0021-9231. JSTOR 3267745.
- Thiessen, Matthew (September 2014). Breytenbach, Cilliers; Thom, Johan (eds.). "Paul's Argument against Gentile Circumcision in Romans 2:17-29". Novum Testamentum. Leiden: Brill Publishers. 56 (4): 373–391. doi:10.1163/15685365-12341488. eISSN 1568-5365. ISSN 0048-1009. JSTOR 24735868.
- Murray, Michele (2004). Playing a Jewish Game: Gentile Christian Judaizing in the First and Second Centuries CE. Waterloo, Canada: Wilfrid Laurier University Press. p. 3. ISBN 978-0889204010.
- Greek New Testament, Galatians 2:14 ἀλλ᾽ ὅτε εἶδον ὅτι οὐκ ὀρθοποδοῦσιν πρὸς τὴν ἀλήθειαν τοῦ εὐαγγελίου εἶπον τῷ Πέτρῳ ἔμπροσθεν πάντων Εἰ σὺ Ἰουδαῖος ὑπάρχων ἐθνικῶς ζῇς καὶ οὐκ Ἰουδαϊκῶς τί τὰ ἔθνη ἀναγκάζεις Ἰουδαΐζειν.
- Dunn, James D. G. (Autumn 1993). Reinhartz, Adele (ed.). "Echoes of Intra-Jewish Polemic in Paul's Letter to the Galatians". Journal of Biblical Literature. Society of Biblical Literature. 112 (3): 462. doi:10.2307/3267745. ISSN 0021-9231. JSTOR 3267745.
2:14: “how is it that you compel the Gentiles to judaize?” “To judaize” was a quite familiar expression, in the sense “to live like a Jew”, “to adopt a distinctively Jewish way of life”-with reference to Gentiles taking up Jewish customs like observance of the sabbath. The polemical note sounds in the verb “compel”. [...] The element of compulsion would enter because there were Gentiles who were making claims, or for whom claims were being made, to enter into what generations of Jews had always regarded as their exclusive privileges (in terms of the argument of Galatians, into the direct line of inheritance from Abraham). To safeguard the character of these privileges it was evidently seen as necessary to ensure that such claimants conformed fully to the traditional notes of the covenant people. This Paul regarded as compulsion.
- Michele Murray Playing a Jewish Game: Gentile Christian Judaizing in the First and Second Centuries CE, Canadian Corporation for Studies in Religion, 2004, p. 33: "From Paul's perspective, by withdrawing from Gentile table fellowship, Peter was sending a message to the Gentile believers of Antioch. The message to Antiochene Gentile Christians was that they were to judaize."
- Donaldson, Terence L. (2016). "Supersessionism and Early Christian Self-Definition" (PDF). JJMJS. 3: 2–3.
- from the Koine Greek Ioudaizō (Ιουδαϊζω); see also Strong's G2450
- Anchor Bible Dictionary, Vol. 3. “Judaizing.”
- Gal 2:14
- Hodges, Frederick M. (2001). "The Ideal Prepuce in Ancient Greece and Rome: Male Genital Aesthetics and Their Relation to Lipodermos, Circumcision, Foreskin Restoration, and the Kynodesme" (PDF). Bulletin of the History of Medicine. Johns Hopkins University Press. 75 (Fall 2001): 375–405. doi:10.1353/bhm.2001.0119. PMID 11568485. Retrieved 3 January 2020.
- Rubin, Jody P. (July 1980). "Celsus' Decircumcision Operation: Medical and Historical Implications". Urology. Elsevier. 16 (1): 121–124. doi:10.1016/0090-4295(80)90354-4. PMID 6994325. Retrieved 3 January 2020.
- Fredriksen, Paula (2018). When Christians Were Jews: The First Generation. London: Yale University Press. pp. 10–11. ISBN 978-0-300-19051-9.
- Kohler, Kaufmann; Hirsch, Emil G.; Jacobs, Joseph; Friedenwald, Aaron; Broydé, Isaac. "Circumcision: In Apocryphal and Rabbinical Literature". Jewish Encyclopedia. Kopelman Foundation. Retrieved 3 January 2020.
Contact with Grecian life, especially at the games of the arena [which involved nudity], made this distinction obnoxious to the Hellenists, or antinationalists; and the consequence was their attempt to appear like the Greeks by epispasm ("making themselves foreskins"; I Macc. i. 15; Josephus, "Ant." xii. 5, § 1; Assumptio Mosis, viii.; I Cor. vii. 18; Tosef., Shab. xv. 9; Yeb. 72a, b; Yer. Peah i. 16b; Yeb. viii. 9a). All the more did the law-observing Jews defy the edict of Antiochus Epiphanes prohibiting circumcision (I Macc. i. 48, 60; ii. 46); and the Jewish women showed their loyalty to the Law, even at the risk of their lives, by themselves circumcising their sons.
- Neusner, Jacob (1993). Approaches to Ancient Judaism, New Series: Religious and Theological Studies. Scholars Press. p. 149.
Circumcised barbarians, along with any others who revealed the glans penis, were the butt of ribald humor. For Greek art portrays the foreskin, often drawn in meticulous detail, as an emblem of male beauty; and children with congenitally short foreskins were sometimes subjected to a treatment, known as epispasm, that was aimed at elongation.
- Goodman, Martin (2007). "Identity and Authority in Ancient Judaism". Judaism in the Roman World: Collected Essays. Ancient Judaism and Early Christianity. 66. Leiden: Brill Publishers. pp. 30–32. doi:10.1163/ej.9789004153097.i-275.7. ISBN 978-90-04-15309-7. ISSN 1871-6636. LCCN 2006049637. S2CID 161369763.
- Bokenkotter, Thomas (2004). A Concise History of the Catholic Church (Revised and expanded ed.). Doubleday. pp. 19–21. ISBN 0-385-50584-1.
- Hurtado, Larry (2005). Lord Jesus Christ: Devotion to Jesus in Earliest Christianity. Grand Rapids, Michigan: Wm. B. Eerdmans. pp. 162–165. ISBN 978-0-8028-3167-5.
- McGrath, Alister E. (2006). Christianity: An Introduction. Oxford: Wiley-Blackwell. pp. 174–175. ISBN 1-4051-0899-1.
- Cross, F. L.; Livingstone, E. A., eds. (2005). The Oxford Dictionary of the Christian Church (3rd Revised ed.). Oxford: Oxford University Press. pp. 1243–45. doi:10.1093/acref/9780192802903.001.0001. ISBN 978-0-19-280290-3.
- Dunn, James D. G., ed. (2007). "'Neither circumcision nor uncircumcision, but...'". The New Perspective on Paul: Collected Essays. Wissenschaftliche Untersuchungen zum Neuen Testament. 185. Tübingen: Mohr Siebeck. pp. 314–330. ISBN 978-3-16-149518-2. Retrieved 30 November 2019.
- Thiessen, Matthew (2016). "Gentile Sons and Seed of Abraham". Paul and the Gentile Problem. New York: Oxford University Press. pp. 105–115. ISBN 978-0-19-027175-6. Retrieved 30 November 2019.
- Bisschops, Ralph (January 2017). "Metaphor in Religious Transformation: 'Circumcision of the Heart' in Paul of Tarsus" (PDF). In Chilton, Paul; Kopytowska, Monika (eds.). Language, Religion and the Human Mind. New York: Oxford University Press. pp. 1–30. doi:10.1093/oso/9780190636647.003.0012. ISBN 978-0-19-063664-7. Retrieved 30 November 2019.
- Fredriksen, Paula (2018). When Christians Were Jews: The First Generation. London: Yale University Press. pp. 157–160. ISBN 978-0-300-19051-9.
- "CATHOLIC ENCYCLOPEDIA: Judaizers". www.newadvent.org. Retrieved 2018-03-20.
- Black, C. Clifton; Smith, D. Moody; Spivey, Robert A., eds. (2019) . "Paul: Apostle to the Gentiles". Anatomy of the New Testament (8th ed.). Minneapolis: Fortress Press. pp. 187–226. doi:10.2307/j.ctvcb5b9q.17. ISBN 978-1-5064-5711-6. OCLC 1082543536.
- Romans 11:13; 1 Timothy 2:7; 2 Timothy 1:11
- McGarvey on Acts 16: "Yet we see him in the case before us, circumcising Timothy with his own hand, and this 'on account of certain Jews who were in those quarters.'"
- For example, see Catholic Encyclopedia (1907–1914): Acts of the Apostles: Objections Against the Authenticity
- "Flavius Josephus. The Wars Of The Jews. Book II, chapter 8.14". Archived from the original on April 28, 2005.
- "Flavius Josephus, The Wars of the Jews", William Whiston, A.M., Ed., John E. Beardsley. 1895. Book II, Whiston Section 461. Tufts.edu, Tufts University.
- "St. Ignatius of Antioch to the Magnesians (Roberts-Donaldson translation)". Earlychristianwritings.com. 2006-02-02. Retrieved 2011-09-16.
- "NPNF2-14. The Seven Ecumenical Councils | Christian Classics Ethereal Library". CCEL.org. 2005-06-01. Retrieved 2011-09-16.
- McGrath, Alister E. Christianity: An Introduction. Blackwell Publishing (2006). ISBN 1-4051-0899-1, page 174.
- Eric Plumer Augustine's Commentary on Galatians: Introduction, Text, Translation, and Notes p124 footnote "5 Literally, 'who were compelling Gentiles to Judaize (Latin: iudaizare)'—in other words, '... to live in accordance with Jewish customs'. In the Latin Bible the term occurs only at Gal. 2: 14, where it virtually transliterates the Greek ioudaizein"
- S.V. Bulgakov "Handbook of heresies, sects and schisms" under Караимиты
- under Louis H. Gray's entry "Judaizing" section 8 "Recrudescent forms" subsection C "Karaimites" on page 612 in Volume 7 of "Encyclopædia of Religion and Ethics" HardPress. 2013. Gray, Louis Herbert (1914). "Judaizing". In Hastings, James (ed.). Encyclopædia of Religion and Ethics. 7. T and T Clark, Edinburgh. p. 612.
- Seymour B. Liebman The inquisitors and the Jews in the New World 1975 "The term Judaizante was applied to Jewish apostates to Catholicism who practiced Judaism secretly. In some instances the term was synonymous with Jew."
- Zumárraga and the Mexican Inquisition, 1536-1543 "The first activity of the Mexican Inquisition against Jews and Judaizantes came in 1523 with the ordinance against heretics and Jews."
- Ricardo Escobar Quevedo. Inquisición y judaizantes en América española (siglos XVI-XVII).Bogota: Editorial Universidad del Rosario, 2008.
- Márquez Villanueva. Sobre el concepto de judaizante. Tel Aviv : University Publishing Projects, 2000.
- Universidad de Alicante. Sobre las construcciones narrativas del “judío judaizante” ante la Inquisición. Universidad de Alicante. Departamento de Filología Española, Lingüística General y Teoría de la Literatura; Rovira Soler, José Carlos. Universidad de Alicante 2014
- Customary in some Coptic and other churches:
- "The Coptic Christians in Egypt and the Ethiopian Orthodox Christians — two of the oldest surviving forms of Christianity — retain many of the features of early Christianity, including male circumcision. Circumcision is not prescribed in other forms of Christianity... Some Christian churches in South Africa oppose the practice, viewing it as a pagan ritual, while others, including the Nomiya church in Kenya, require circumcision for membership and participants in focus group discussions in Zambia and Malawi mentioned similar beliefs that Christians should practice circumcision since Jesus was circumcised and the Bible teaches the practice."
- "The decision that Christians need not practice circumcision is recorded in Acts 15; there was never, however, a prohibition of circumcision, and it is practiced by Coptic Christians." "circumcision" Archived 2007-08-08 at the Wayback Machine, The Columbia Encyclopedia, Sixth Edition, 2001-05.
- "The Ethiopian Orthodox Tewahedo Church". cnewa.org. Catholic Near East Welfare Association. Retrieved 31 October 2015.
- Escobar Quevedo, Ricardo. Inquisición y judaizantes en América española (siglos XVI-XVII). Bogota: Editorial Universidad del Rosario, 2008.
- Márquez Villanueva. Sobre el concepto de judaizante. Tel Aviv: University Publishing Projects, 2000.
- Newman, Louis Israel (2012). Jewish Influence on Christian Reform Movements. Varda Books. ISBN 978-1590451601.
- Sábado Secreto. Periodico Judaizante. OCLC Number: 174068030
- Universidad de Alicante. Sobre las construcciones narrativas del "judío judaizante" ante la Inquisición. Universidad de Alicante. Departamento de Filología Española, Lingüística General y Teoría de la Literatura; Rovira Soler, José Carlos. Universidad de Alicante 2014
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