this ye know - The oldest manuscripts read, “Of this ye are sure knowing”; or as Alford, “This ye know being aware.”
covetous ... idolater - (Col 3:5). The best reading may be translated, That is to say, literally, which is (in other words) an idolater. Paul himself had forsaken all for Christ (2Co 6:10; 2Co 11:27). Covetousness is worship of the creature instead of the Creator, the highest treason against the King of kings (1Sa 15:3; Mat 6:24; Phi 3:19; 1Jo 2:15).
hath - The present implies the fixedness of the exclusion, grounded on the eternal verities of that kingdom [Alford].
of Christ and of God - rather, as one Greek article is applied to both, “of Christ and God,” implying their perfect oneness, which is consistent only with the doctrine that Christ is God (compare 2Th 1:12; 1Ti 5:21; 1Ti 6:13).