have... fellowship. have partnership. Greek. sunkoinoneo. Only here; Philippians 1:4; Philippians 1:14.Revelation 18:4.
unfruitful works. Compare dead works, Hebrews 6:1. wicked works, Co Ephesians 1:1; Ephesians 1:21. all works of the darkness, Romans 13:12. Consequently, the works of the devil, 1 John 3:8. Compare John 8:44, and contrast Ephesians 2:10.
darkness. the darkness.
reprove. convict. See Luke 3:19.