Jude 1:11

Alas for them! They have walked in the path of Cain; for the sake of gain they have rushed headlong into Balaam's error, and have perished in Koran's rebellion.

2 Peter 2:15

They have forsaken the right way; they have lost their way, and followed the road of Balaam, the son of Beor, who loved the wages of wrong-doing.

1 John 3:12

We are not to be like Cain, who belonged to the Evil One, and murdered his brother. And why did he murder him? It was because his own deeds were evil, and his brother's, righteous.

Revelation 2:14

But I have a few things against you, because you have there some who hold to the teaching of Balaam, who taught Balak to put a stumbling-block before the sons of Israel, to eat food offered to idols, and to practise immorality.

Matthew 11:21

"Woe unto you, Chorazin! Woe unto you, Bethsaida! Because if the mighty works which have been done in you had been done in Tyre and Sidon, they would have repented, long ago, in sackcloth and ashes.

Matthew 23:13-16

"But woe unto you, Scribes and Pharisees, hypocrites! You shut the kingdom of heaven in men's faces; for you do not enter, yourselves, nor do you permit those who are about to come in, to enter.

Luke 11:42-47

"But woe unto you Pharisee! for you tithe mint and rue and every herb, and disregard justice and the love of God; but these you ought to have done, and not leave the other undone.

Hebrews 11:4

By faith Abel offered to God a sacrifice more acceptable than that of Cain, through which he had witness borne to him that he was righteous, God giving the testimony by accepting his gifts; and through it he, although he is dead, 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 be like Cain, who belonged to the Evil One, and murdered his brother. And why did he murder him? It was because his own deeds were evil, and his brother's, righteous.

Ran

2 Peter 2:15
They have forsaken the right way; they have lost their way, and followed the road of Balaam, the son of Beor, who loved the wages of wrong-doing.
Revelation 2:14
But I have a few things against you, because you have there some who hold to the teaching of Balaam, who taught Balak to put a stumbling-block before the sons of Israel, to eat food offered to idols, and to practise immorality.