According to church tradition, he is known as Quartus of Berytus and is numbered among the Seventy Disciples. He was Bishop of Beirut and suffered for the faith. He converted many to the Christian faith. His feast day is November 10.
The New American Standard Bible translates Romans 16:23 as follows:
Gaius, host to me and to the whole church, greets you. Erastus, the city treasurer greets you, and Quartus, the brother.
Although the literal translation of the Greek is that Quartus is "the" brother, most scholars interpret this as meaning that Quartus is a fellow believer, rather than a brother of Erastus. Thus, some translations such as the NIV translate the phrase as "our brother Quartus".
- Holy Apostles, Erastus, Olympas, Herodian, Sosipater, Quartus and Tertius,
- entreat the merciful God,
- to grant our souls forgiveness of transgressions.
Kontakion (Tone 2)
- Illumined by divine light, O holy apostles,
- you wisely destroyed the works of idolatry.
- When you caught all the pagans you brought them to the Master
- and taught them to glorify the Trinity.
- Apostle Quartus of the Seventy (OCA)
- Erastos, Olympas, Herodion, Sosipatros, Quartus, Tertios, Apostles of the 70 (GOARCH)
- The Holy Apostles Olympas, Erastus, Quartus, Herodion, Sosipater and Tertius (Prologue of Ohrid)