'Fellow worker' in the Bible

To Urban, our fellow-worker in the Cause of Christ, and to my dear friend Stachys;

Timothy, my fellow-worker, sends you his greetings, and Lucius, Jason, and Sosipater, my countrymen, send theirs.

Still I think it necessary to send Epaphroditus to you now, for he is my brother, fellow-worker, and fellow-soldier, and he was also your messenger to help me in my need.

To our dear friend and fellow-worker Philemon, to our sister Apphia, to our fellow-soldier Archippus; and to the Church that meets at Philemon's house;