Jude 1:11

Wo unto them! for they have walked in the way of Cain, and have eagerly run in Balaam's erroneous path of hire, and have perished in opposition, like Corah.

2 Peter 2:15

who forsaking the strait road are gone out of the way, following the path of Balaam the son of Bosor who loved the wages of iniquity.

1 John 3:12

Not as Cain, who was of the wicked one, and slew his brother: and wherefore did he slay him? Because his own works were wicked, and those of his brother righteous.

Revelation 2:14

Yet I have a few things against thee, that thou hast there some who hold the doctrine of Balaam, who taught Balac to lay a stumbling-block before the children of Israel, to eat of idol sacrifices, and to commit whoredom.

Matthew 11:21

Wo unto thee, Chorazin! wo unto thee, Bethsaida! for if the miracles which had been wrought in you had been done in Tyre and Sidon, long since would they have repented in sack-cloth and ashes.

Matthew 23:13-16

Wo unto you, scribes and Pharisees, hypocrites! because ye shut up the kingdom of heaven from men; for ye yourselves enter not in, and those who were coming in, ye suffer not to enter.

Luke 11:42-47

But wo to you, Pharisees, because ye tithe mint, and rue, and every herb, and pass by judgment and the love of God. These ought ye to have done, and not to have omitted the other.

Hebrews 11:4

By faith Abel offered unto God a sacrifice of more excellence than Cain, by which he received a testimony that he was a righteous man, God bearing witness upon his gifts: and by this, though dead, he still speaketh.

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 wicked one, and slew his brother: and wherefore did he slay him? Because his own works were wicked, and those of his brother righteous.

Ran

2 Peter 2:15
who forsaking the strait road are gone out of the way, following the path of Balaam the son of Bosor who loved the wages of iniquity.
Revelation 2:14
Yet I have a few things against thee, that thou hast there some who hold the doctrine of Balaam, who taught Balac to lay a stumbling-block before the children of Israel, to eat of idol sacrifices, and to commit whoredom.