Faith in Christianity
The faith in Christianity is a central notion taught by Jesus Christ himself in reference to the Good News (cf. Mk 1:15). In the understanding of Jesus it was an act of trust and of self-abandonment by which people no longer rely on their own strength and policies but commit themselves to the power and guiding word of him in whom they believe (cf. Mt 21:25p,32; Lk 1:20,45). Since Protestant Reformation the meaning of this term has been an object of major theological disagreement in Western Christianity. The differences have been largely overcome in the Joint Declaration on the Doctrine of Justification (1999). Most of the definitions in the history of Christian theology have followed biblical formulation in the Letter to the Hebrews (11:1): the assurance of things hoped for, the conviction of things not seen. As in other Abrahamic religions, it includes a belief in God, a belief in the reality of a transcendent domain that God administers as His Kingdom from His Throne and in the benevolence of God's will or plan for humankind and the World to Come.
Christianity differs from other Abrahamic religions in that it focuses on the ministry of Jesus, and on his place as the prophesied Christ. It also includes a belief in the New Covenant. According to most Christian traditions, Christian faith requires a belief in Jesus' resurrection from the dead by God the Father through The Holy Spirit.
The precise understanding of the term "faith" differs among the various Christian traditions. Despite these differences, Christians generally agree that faith in Jesus lies at the core of the Christian tradition, and that such faith is required in order to be a Christian. The Christian tradition is sometimes called "the faith", since faith in Jesus is so central to the tradition. Faith and the word "belief" are often treated synonymously, which has led to Christians being called 'believers'.
New Testament 
The word "faith", translated from the Greek πιστις (pi'stis), was primarily used in the New Testament with the Greek perfect tense and translates as a noun-verb hybrid; which is not adequately conveyed by the English noun. The verb form of pi'stis is pisteuo, which is often translated into English versions of the New Testament as 'believe'. The adjectival form, pistos, is almost always translated as 'faithful'. The New Testament writers, following the translators of the Septuagint (Greek Old Testament) rendered words in the Hebrew scriptures that concerned 'faithfulness' using pi'stis-group words. The pi'stis-group words are most appropriately translated into English by a range of words, depending on the context in which they occur. In both the New Testament and other Greek texts, pi'stis describes connections of firmness that can form between a wide variety of entities: people, traditions, practices, groups, purposes, facts or propositions. The appropriate English translation is often evident from the relationship between the two entities connected by pi'stis. The pi'stis-group words in the New Testament can thus be interpreted as relating to ideas of faithfulness, fidelity, loyalty, commitment, trust, belief, and proof. The most appropriate interpretation and translation of pi'stis-group words in the New Testament is a matter of recent controversy, particularly over the meaning of pi'stis when it is directed towards Jesus.
Faith in Jesus as belief, trust and reliance 
In the Protestant tradition, faith is generally understood to be closely associated with ideas of belief, trust, and reliance. This understanding is founded in the doctrinal statements of the Reformers. One of their confessional statements explains: "the principle acts of saving faith are accepting, receiving, and resting upon Christ alone for justification, sanctification, and eternal life." The Reformers contrasted faith with human efforts to do good works as a means of justification. This understanding of saving faith has remained within the Protestant tradition. Saving faith is generally understood in terms of a belief of, trust in, and reliance on the person of Jesus and his work of atonement accomplished through his death on the cross.
In a more everyday sense, faith is often discussed in terms of believing God's promises, trusting in his faithfulness, and relying on God's character and faithfulness to act. Yet, many Protestants stress that genuine faith is also acted on, and thus it brings about different behaviour or action and does not consist merely of mental belief, trust or confidence or outright antinomianism. Hence, having authentic 'faith in Jesus' is generally understood to lead to changes in how one thinks and lives. However, the Protestant tradition holds that these changes in character and conduct do not have any value for obtaining a positive final judgment, but that a positive final judgment depends on faith alone (sola fide).
Faith in Jesus as faithfulness, loyalty and commitment 
In recent decades, scholars have researched what pi'stis meant in the social context of the New Testament writers. Several scholars who have studied the usage of pi'stis in both early Greek manuscripts and the New Testament have concluded that 'faithfulness' is the most satisfactory English translation in many instances. This recent research has prompted some to argue that New Testament faith and belief in Jesus should be understood in terms of faithfulness, loyalty, and commitment to him and his teachings, rather than in terms of belief, trust and reliance. Such an understanding of faith can be integrated well with the moral influence theory of atonement.
Specific verses 
Hebrews 11:1: "Now faith (pi'stis) is the assurance of things hoped for, the conviction of things not seen." This passage concerning the function of faith in relation to the covenant of God is often used as a definition of faith. Υποστασις (hy-po'sta-sis), translated "assurance" here, commonly appears in ancient papyrus business documents, conveying the idea that a covenant is an exchange of assurances which guarantees the future transfer of possessions described in the contract. In view of this, James Hope Moulton and George Milligan suggest the rendering: "Faith is the title deed of things hoped for" (Vocabulary of the Greek Testament, 1963, p. 660). The Greek word e´leg-khos, rendered "conviction" in Hebrews 11:1 (ESV), conveys the idea of bringing forth evidence that demonstrates something, particularly something contrary to what appears to be the case. Thereby this evidence makes clear what has not been discerned before and so refutes what has only appeared to be the case. This evidence for conviction is so positive or powerful that it is described as faith. Christian faith, described in these terms, is not synonymous with credulity, but rather has connotations of acting in faithfulness and trust.
John 3:16: "For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." This passage is often used as a standard statement of Christian faith.
Hebrews 11:6: This passages describes the meaning and the practical role of faith: "Without faith it is impossible to please [God], for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him."
John 6:28–29: When asked "What must we do to do the works God requires?" the writer has Jesus answering, "The work of God is this: to believe (pi'stis) in the one he has sent."
Galatians 5:6: "For in Christ Jesus neither circumcision nor uncircumcision counts for anything, but only faith working through love."
James 2:22: "Seest thou how faith wrought with his works, and by works was faith made perfect?"
James 2:26: "For as the body without the spirit is dead, so faith without works is dead also."
Roman Catholicism 
According to Roman Catholic theology, in an objective sense faith is the sum of truths revealed by God in Scripture and tradition and which the Church presents to us in a brief form in its creeds. Subjectively, faith stands for the habit or virtue by which these truths are assented to.
Faith is a supernatural act 
Faith is claimed to be a supernatural act performed by Divine grace. It is "the act of the intellect assenting to a Divine truth owing to the movement of the will, which is itself moved by the grace of God" (St. Thomas, II-II, Q. iv, a. 2). And just as the light of faith is a gift supernaturally bestowed upon the understanding, so also this Divine grace moving the will is, as its name implies, an equally supernatural and an absolutely gratuitous gift. Neither gift is due to previous study, neither of them can be acquired by human efforts, but "Ask and ye shall receive."
Because the virtue is "infused" and not reachable by human efforts, it is therefore one of the theological virtues.
Faith is not blind 
"We believe", says the Vatican Council (III, iii), "that revelation is true, not indeed because the intrinsic truth of the mysteries is clearly seen by the natural light of reason, but because of the authority of God Who reveals them, for He can neither deceive nor be deceived." Thus, with regard to the act of faith which the Christian makes in the Holy Trinity, faith can be described in a syllogistic fashion, thus:
- Whatever God reveals is true
Roman Catholics accept the major premise as being beyond doubt, a presupposition upon which reason is based and thus intrinsically evident to reason; the minor premise is also held to be true, based on belief in the infallibility of certain Church declarations, and also because, as the Vatican Council says, "in addition to the internal assistance of His Holy Spirit, it has pleased God to give us certain external proofs of His revelation, viz. certain Divine facts, especially miracles and prophecies, for since these latter clearly manifest God's omnipotence and infinite knowledge, they afford most certain proofs of His revelation and are suited to the capacity of all." Hence Thomas Aquinas writes: "A man would not believe unless he saw the things he had to believe, either by the evidence of miracles or of something similar" (II-II:1:4, ad 1). Thomas is here speaking of the motives of credibility, the causes which give rise to belief.
Text adapted from The Catholic Encyclopedia article "Faith".
Justification not by faith alone 
In the Catholic Church justification is granted by God from baptism firstly, instead of plainly by faith, and from the sacrament of reconciliation after if a mortal sin is committed. A mortal sin makes justification lost even if faith is still present. Before baptism faith is required of adults. The baptism of babies requires the parents' promise to pass on the faith to the child. Baptism is called the sacrament of faith.
Eastern Christianity 
Noetic faculty 
Faith (pistis) in Eastern Christianity is an activity of the nous or spirit. Faith being characteristic of the noesis or noetic experience of the nous or spirit. Faith here being defined as intuitive truth meaning as a gift from God, faith is one of God's uncreated energies (Grace too is another of God's uncreated energies and gifts). The God in Trinity is uncreated or incomprehensible in nature, being or essence. Therefore in Eastern Christianity, unlike in Western Christianity (see Actus et potentia), God's essence or incomprehisibility is distinguished from his uncreated energies. This is clarified in the Essence-Energies distinction of Gregory Palamas. Faith here beyond simply a belief in something. Faith here as an activity or operation of God working in and through mankind. Faith being a critical aspect to the relationship between man and the God, this relationship or process is called Theosis. Faith as an operation in contemplating of an object for understanding. Mankind's analysis of an objects properties: enables us to form concepts. But this analysis can in no case exhaust the content of the object of perception. There will always remain an "irrational residue" which escapes analysis and which can not be expressed in concepts: it is this unknowable depth of things, that which constitutes their true, indefinable essence that also reflects the origin of things in God.
Intuitive truth 
As God in Trinity, as the anomalies of God's essence or being. In Eastern Christianity it is by faith or intuitive truth that this component of an objects existence is grasp. Though God through his energies draws us to him, his essence remains inaccessible. The operation of faith being the means of free will by which mankind faces the future or unknown, these noetic operations contained in the concept of insight or noesis. XIV. SAVING FAITH.
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Faith as steadfastness in reasoned belief 
- "Faith seems to be used by Christians in two senses or on two levels ... In the first sense it means simply Belief."
Several paragraphs later he continues with:
- "Faith, in the sense in which I am here using the word, is the art of holding on to things your reason has once accepted, in spite of your changing moods."
Faith involving knowledge 
Protestants differ on the exact relationship between faith and knowledge, although all agree that knowledge is normally involved. Roughly, the split is between paedobaptists and baptists, with paedobaptists asserting that faith means placing one's trust in Jesus Christ according to the measure of understanding granted, and baptists asserting faith means placing one's trust in Jesus Christ with a certain minimal core of understanding being necessary.
Faith is an operation of the Spirit of God 
Assent to the truth is of the essence of faith, and the ultimate ground on which our assent to any revealed truth rests is the veracity of God. Historical faith is the apprehension of and assent to certain statements which are regarded as mere facts of history. Temporary faith is that state of mind which is awakened in men (e.g., Felix) by the exhibition of the truth and by the influence of religious sympathy, or by what is sometimes styled the common operation of the Holy Spirit. Saving faith is so called because it has eternal life inseparably connected with it, and is a special operation of the Holy Spirit
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Faith as a gift of God 
Paul writes in Ephesians 2:8–9 "For it is by grace you have been saved, through faith, and that not of yourselves; it is the gift of God, not of works lest anyone should boast." From this, some Protestants believe that faith itself is given as a gift of God (e.g. the Westminster Confession of Faith), although this interpretation is disputed by others who believe the Greek gender alignment indicates that the "gift" referred to is salvation rather than faith.
See also 
- cf. footnote b to Mt 8:10 in The New Jerusalem Bible, London: Darton, Longmann & Todd, 1985. ISBN 0 232 51650, p. 1621.
- Cf. "Faith". Encyclopaedia Britannica 9. London-Chicago-Geneva-Sydney-Toronto: W. Benton. 1964. p. 40.
- The importance of a belief in the resurrection is substantiated in several ways: (1 Corinthians 15:1–4) '... the gospel I preached to you... Otherwise, you have believed in vain...'. The same book says, in 15:14: "And if Christ has not been raised, our preaching is useless and so is your faith" (see also Acts 2:32; Philippians 3:10; John 11:25).
- See A. J. Wallace, R. D. Rusk, Moral Transformation: The Original Christian Paradigm of Salvation (New Zealand: Bridgehead, 2011), pp 120–135 for a more detailed explanation of the different meanings pi'stis can take.
- Westminster Confession of 1646 AD, Article XIV, section II.
- See, for example, Augsburg Confession of 1530 AD, Article IV.
- Douglas A. Campbell, The Quest for Paul's Gospel: A Suggested Strategy (London: T&T Clark , 2005), p. 186.
- Stanley K. Stowers, A Rereading of Romans: Justice, Jews, and Gentiles (Ann Arbor, MI: Edwards Brothers, 1994), p. 199.
- A. J. Wallace, R. D. Rusk, Moral Transformation: The Original Christian Paradigm of Salvation (New Zealand: Bridgehead, 2011), pp 120–135.
- Catechism of the Catholic Church No. 1992. Vatican City-State. "Justification is conferred in Baptism, the sacrament of faith."
- Catechism of the Catholic Church No. 1446. The Vatican. "Christ instituted the sacrament of Penance for all sinful members of his Church: above all for those who, since Baptism, have fallen into grave sin, and have thus lost their baptismal grace and wounded ecclesial communion. It is to them that the sacrament of Penance offers a new possibility to convert and to recover the grace of justification. The Fathers of the Church present this sacrament as "the second plank [of salvation] after the shipwreck which is the loss of grace.""
- Glossary of terms from the Philokalia pg 430 Palmer, G.E.H; Sherrard; Ware, Kallistos (Timothy). The Philokalia, Vol. 4 ISBN 0-571-19382-X Faith- not only an individual or theoretical belief in the dogmatic truths of Christianity, but an all-embracing relationship, an attitude of love and trust in God. As such it involves a transformation of man's entire life. Faith is a gift from God, the means whereby we are taken up into the whole theanthropic activity of God in Christ and of man in Christ through which man attains salvation.
- The Mystical Theology of the Eastern Church, by Vladimir Lossky SVS Press, 1997. (ISBN 0-913836-31-1) James Clarke & Co Ltd, 1991. (ISBN 0-227-67919-9) pg 21 pg 71
- The Mystical Theology of the Eastern Church, by Vladimir Lossky SVS Press, 1997. (ISBN 0-913836-31-1) James Clarke & Co Ltd, 1991. (ISBN 0-227-67919-9) pg 71
- The Mystical Theology of the Eastern Church, by Vladimir Lossky pg 33 SVS Press, 1997. (ISBN 0-913836-31-1) James Clarke & Co Ltd, 1991. (ISBN 0-227-67919-9) pg 71
- John 17:3, Luke 1:77,Galatians 4:9, Philippians 3:8, and 1 Timothy 2:4 refer to faith in terms of knowledge.
- John 5:46 refers to acceptance of the truth of Christ's teaching, while John 3:36 notes the rejection of his teaching.
- John 3:16,36, Galatians 2:16, Romans 4:20–25, 2 Timothy 1:12 speak of trust, confidence, and belief in Christ. John 3:18 notes belief in the name of Christ, and Mark 1:15 notes belief in the gospel.
- Engelder, T.E.W., Popular Symbolics. St. Louis: Concordia Publishing House, 1934. pp. 54ff, Part XIV. "Sin"
- Lewis, C. S. (2001). Mere Christianity: a revised and amplified edition, with a new introduction, of the three books, Broadcast talks, Christian behaviour, and Beyond personality. San Francisco: HarperSanFrancisco. ISBN 0-06-065292-6.
- "The Westminster Confession of Faith, 1646
- GREGORY P. SAPAUGH, "IS FAITH A GIFT? A STUDY OF EPHESIANS 2:8," Journal of the Grace Evangelical Society, Volume 7:12, Spring 1994
- Confident Christians Free Christian apologetic materials and presentations
- Save the World Online Church"
- Summa Theologica "Second Part of the Second Part" See Questions 1–16
- Catholic Encyclopedia "Faith"