have . . . fellowship = have partnership. Greek. sunkoinoneo. Only here; Php_1:4, Php_1:14. Rev_18:4.
unfruitful works. Compare dead works, Heb_6:1; wicked works, Co Eph_1:1, Eph_1:21; all works of the darkness, Rom_13:12. Consequently, the works of the devil, 1Jn_3:8. Compare Joh_8:44, and contrast Eph_2:10.