This article relies largely or entirely on a single source. (October 2019)
Mark the cousin of Barnabas is a character mentioned in the New Testament, usually identified with John Mark (and thus with Mark the Evangelist). The opinion that this Mark is a different Mark is found in the writings of Hippolytus of Rome who thought them to be separate people.
Paul mentioned Mark the Cousin of Barnabas explicitly in Colossians 4:10 (Bible Quotation from New American Standard Bible 1995 Update [NAU]):
Aristarchus, my fellow prisoner, sends you his greetings; and also Barnabas's cousin Mark (about whom you received instructions; if he comes to you, welcome him) (Col 4:10 NAU)
23 Epaphras, my fellow prisoner in Christ Jesus, greets you, 24 as do Mark, Aristarchus, Demas, Luke, my fellow workers. (Philemon 1:23-24 NAU)
According to Hippolytus, in his work On the Seventy Apostles, Mark the cousin of Barnabas (Colossians 4:10; Philemon 24) is distinct from John Mark (Acts 12:12, 25; 13:5, 13; 15: 37) and Mark the Evangelist (2 Timothy 4:11). They all belonged to the Seventy Apostles of Christ (ranked #56, #65, and #14, respectively), who were sent out by Jesus to saturate Judea with the gospel not long before his crucifixion (Luke 10:1ff.). Hippolytus says that Mark the cousin of Barnabas was a leader of the apostolic church and the bishop of Apollonia. (There are three possible sites for this place: one in Greece, one in Thrace, and one in Cyrenaica.)
- Ante-Nicean Fathers, ed. Alexander Roberts, James Donaldson and A. Cleaveland Coxe, vol. 5 (Peabody MA: Hendrickson Publishers, 1999), 255-6