Romans 16:2-3

Welcome her [as someone to fellowship] in the Lord, in a way that God's people should. And you people should help her in whatever way she needs you, for she herself has helped many people, including me.

Philippians 4:3

Yes, and I am asking you also, [my] faithful partner [Note: This person is unknown, but may have been one of Paul's preacher companions], help those women, for they have worked hard with me in [spreading] the Gospel, along with Clement also, and the rest of my fellow-workers, whose names are in the book of life. [See Rev. 3:5; Heb. 12:23].

3 John 1:8

Therefore, we should show hospitality to such men, so that we can be fellow-workers [with them] in [the cause of] the truth.

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