1 Corinthians 5:1-6

It is commonly reported that there is lewdness among you, and such lewdness as is not named even amongst the heathens, that one should have his father's wife.

Hebrews 12:15-16

looking to it, least there be any one falling short of the grace of God, least any root of bitterness springing up should be troublesome, and by it many be defiled:

Treasury of Scripture Knowledge

Summary

But the children of Israel committed a trespass in the accursed thing: for Achan, the son of Carmi, the son of Zabdi, the son of Zerah, of the tribe of Judah, took of the accursed thing: and the anger of the LORD was kindled against the children of Israel.

Bible References

The anger

1 Corinthians 5:1
It is commonly reported that there is lewdness among you, and such lewdness as is not named even amongst the heathens, that one should have his father's wife.
Hebrews 12:15
looking to it, least there be any one falling short of the grace of God, least any root of bitterness springing up should be troublesome, and by it many be defiled: