Jude 1:11

Alas for them; for they have followed in the steps of Cain; for the sake of gain they have rushed on headlong in the evil ways of Balaam; and have perished in rebellion like that of Korah!

2 Peter 2:15

Forsaking the straight road, they have gone astray, having eagerly followed in the steps of Balaam, the son of Beor, who was bent on securing the wages of unrighteousness.

1 John 3:12

We are not to resemble Cain, who was a child of the Evil one and killed his own brother. And why did he kill him? Because his own actions were wicked and his brother's actions righteous.

Revelation 2:14

Yet I have a few things against you, because you have with you some that cling to the teaching of Balaam, who taught Balak to put a stumbling-block in the way of the descendants of Israel--to eat what had been sacrificed to idols, and commit fornication.

Matthew 11:21

"Alas for thee, Chorazin!" He cried. "Alas for thee, Bethsaida! For had the mighty works been done in Tyre and Sidon which have been done in both of you, they would long ere now have repented, covered with sackcloth and ashes.

Matthew 23:13-16

"But alas for you, Scribes and Pharisees, hypocrites, for you lock the door of the Kingdom of the Heavens against men; you yourselves do not enter, nor do you allow those to enter who are seeking to do so.

Luke 11:42-47

"But alas for you Pharisees! for you pay tithes on your mint and rue and every kind of garden vegetable, and are indifferent to justice and the love of God. These are the things you ought to have attended to, while not neglecting the others.

Hebrews 11:4

Through faith Abel offered to God a more acceptable sacrifice than Cain did, and through this faith he obtained testimony that he was righteous, God giving the testimony by accepting his gifts; and through it, though he is dead, he still speaks.

Treasury of Scripture Knowledge

Summary

Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.

Bible References

For

1 John 3:12
We are not to resemble Cain, who was a child of the Evil one and killed his own brother. And why did he kill him? Because his own actions were wicked and his brother's actions righteous.

Ran

2 Peter 2:15
Forsaking the straight road, they have gone astray, having eagerly followed in the steps of Balaam, the son of Beor, who was bent on securing the wages of unrighteousness.
Revelation 2:14
Yet I have a few things against you, because you have with you some that cling to the teaching of Balaam, who taught Balak to put a stumbling-block in the way of the descendants of Israel--to eat what had been sacrificed to idols, and commit fornication.