Jude 1:11

Woe to them, because they went in the way of Cain, and rushed on in the error of Balsam for hire, and perished in the gainsaying of Korah!

2 Peter 2:15

leaving the right way, they were led astray, having followed the way of Balaam, the son of Beor, who loved the wages of unrighteousness,

1 John 3:12

not as Cain who was of the evil one, and slew his brother. And wherefore did he slay him? Because his own works were evil, and his brother's righteous.

Revelation 2:14

But I have a few things against you, because you have there those holding the teaching of Balaam, who taught Balak to cast a stumbling-block before the sons of Israel, to eat idol-sacrifices, and to commit fornication.

Matthew 11:21

"Woe to you, Chorazin! Woe to you, Bethsaida! because, if the mighty works which were 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 to you, scribes and Pharisees, hypocrites! because you shut up the Kingdom of Heaven against men; for ye do not enter, neither do ye suffer those who are entering in to enter.

Luke 11:42-47

"But woe to you Pharisees! because ye tithe the mint, and the rue, and every herb; but ye pass by judgment and the love of God. Now these things it was needful to do, and not to leave those undone.

Hebrews 11:4

By faith Abel offered to God a more excellent sacrifice than Cain, through which he received witness that he was righteous, God testifying of his gifts; and through it he, being dead, is still speaking.

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
not as Cain who was of the evil one, and slew his brother. And wherefore did he slay him? Because his own works were evil, and his brother's righteous.

Ran

2 Peter 2:15
leaving the right way, they were led astray, having followed the way of Balaam, the son of Beor, who loved the wages of unrighteousness,
Revelation 2:14
But I have a few things against you, because you have there those holding the teaching of Balaam, who taught Balak to cast a stumbling-block before the sons of Israel, to eat idol-sacrifices, and to commit fornication.