'Fellow servant' in the Bible

You learned it from [our representative] Epaphras, our beloved fellow bond-servant, who is a faithful minister of Christ on our behalf

As to all my affairs, Tychicus, who is a much-loved brother and faithful assistant and fellow bond-servant in the Lord, will give you all the information.

But he said to me, “Do not do that. I am a fellow servant with you and your brothers the prophets and with those who heed and remember [the truths contained in] the words of this book. Worship God.”