Colossians 4:9
Aristarchus my fellow prisoner greets you, and Mark the cousin of Barnabas (concerning whom you have received instructions—if he comes to you, welcome him), and Jesus who is called Justus — Aristarchus shares Paul's imprisonment. Mark (the evangelist, author of the Gospel) is Barnabas's cousin. The parenthetical instruction ('if he comes, welcome him') may reflect Mark's earlier problematic departure (Acts 15:37-39); Paul rehabilitates him. 'Jesus called Justus' is another Justus (distinct from Paul's secretary Tertius).