Together with Onesimus (συν Ονησιμω). Co-bearer of the letter with Tychicus and praised on a par with him, runaway slave though he is.

Who is one of you (ος εστιν εξ υμων). Said not as a reproach to Colossae for having such a man, but as a privilege to the church in Colossae to give a proper welcome to this returning converted slave and to treat him as a brother as Paul argues to Philemon.