Colossians 4:8-10

I have sent him to you for this very purpose, that you may know how we are doing and that he may encourage your hearts; and with him is Onesimus, our faithful and beloved brother, who is one of you. They will let you know everything about the situation here [in Rome]. Aristarchus, my fellow prisoner, wishes to be remembered to you; as does Mark, the cousin of Barnabas (about whom you received instructions; if he comes to you, welcome him)