Jude 1:11
8 Yet these men, as a result of their dreams, defile the flesh, reject authority, and insult the glorious ones. 9 But even when Michael the archangel was arguing with the devil and debating with him concerning Moses' body, he did not dare to bring a slanderous judgment, but said, "May the Lord rebuke you!" 10 But these men do not understand the things they slander, and they are being destroyed by the very things that, like irrational animals, they instinctively comprehend. 11 Woe to them! For they have traveled down Cain's path, and because of greed have abandoned themselves to Balaam's error; hence, they will certainly perish in Korah's rebellion. 12 These men are dangerous reefs at your love feasts, feasting without reverence, feeding only themselves. They are waterless clouds, carried along by the winds; autumn trees without fruit—twice dead, uprooted; 13 wild sea waves, spewing out the foam of their shame; wayward stars for whom the utter depths of eternal darkness have been reserved.
Date: 90-100 C.E. (based on scholarly estimates)
Pirkei Abot 5:19
19 Whoever possesses these three things, he is of the disciples of Abraham, our father; and [whoever possesses] three other things, he is of the disciples of Balaam, the wicked. A good eye, a humble spirit and a moderate appetite he is of the disciples of Abraham, our father. An evil eye, a haughty spirit and a limitless appetite he is of the disciples of Balaam, the wicked. What is the difference between the disciples of Abraham, our father, and the disciples of Balaam, the wicked? The disciples of Abraham, our father, enjoy this world, and inherit the world to come, as it is said: "I will endow those who love me with substance, I will fill their treasuries" (Proverbs 8:21). But the disciples of Balaam, the wicked, inherit gehinnom, and descend into the nethermost pit, as it is said: "For you, O God, will bring them down to the nethermost pit those murderous and treacherous men; they shall not live out half their days; but I trust in You" (Psalms 55:24).
Search: Jude, Pirkei Avot, Jude 1:11, Pirkei Abot 5:19
Bauckham, Richard Word Biblical Commentary: Jude-2 Peter (p. 81) Zondervan, 1983