vv. 14-15 Jude quoted loosely from a prophecy Enoch gave recorded in the Book of 1 Enoch.62Though God had not inspired that book, He led Jude to quote Enoch's prophecy.63This was a prophecy of God's judgment as it will take place at the second coming of Christ (cf. Matt. 24:30; 2 Thess. 1:7-10). The unbelievers among the false teachers would be the objects of God's judgment then if they were living then.
Jude's reference to Enoch as the seventh (generation) from Adam seems to support the idea that Genesis 5 records all the generations (i.e., it is a closed genealogy). However, critics of this view contend that Jude simply meant that Enoch was the seventh generation from Adam in the biblical genealogy. They assume there were additional intervening generations that Moses did not mention in Genesis. Nevertheless a careful reading of that genealogy shows that Moses left no room for omitted generations.
"Ungodly deeds may be performed by persons who have a form of godliness. Every action that proceeds from an unholy, unrepentant heart is an ungodly deed."64
"Satan in Eden and Judas in Gethsemane clothed ungodly deeds in softwords."65
v. 16 Enoch spoke of the words and the deeds of the ungodly in the quotation just cited. Jude commented further on the words and deeds of the contemporary false teachers in this verse. As the former grumblers, the false teachers in his day grumbled primarily against God.
"He who is out of touch with God is prone to grumble about anything."66
They pursued their lusts for sensuality and gain (cf. vv. 4, 8, 10-11). Their arrogant words probably refer to what they claimed was true about God that contradicted apostolic revelation (cf. Dan. 11:36). Furthermore they flattered people to obtain personal advantage (cf. James 2:1-13).
"As the fear of God drives out the fear of man, so defiance of God tends to put man in His place, as the chief source of good or evil to his fellows."67