So we ought to support such people [welcoming them as guests and providing for them], so that we may be fellow workers for the truth [that is, for the gospel message of salvation].

Beloved, do not imitate what is evil, but [imitate] what is good. The one who practices good [exhibiting godly character, moral courage and personal integrity] is of God; the one who practices [or permits or tolerates] evil has not seen God [he has no personal experience with Him and does not know Him at all].