1 Corinthians 5:1-6

It is actually reported that there is fornication among you, and of a kind unheard of even among the Gentiles--a man has his father's wife!

Hebrews 12:15-16

Be carefully on your guard lest there be any one who falls back from the grace of God; lest any root bearing bitter fruit spring up and cause trouble among you, and through it the whole brotherhood 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 actually reported that there is fornication among you, and of a kind unheard of even among the Gentiles--a man has his father's wife!
Hebrews 12:15
Be carefully on your guard lest there be any one who falls back from the grace of God; lest any root bearing bitter fruit spring up and cause trouble among you, and through it the whole brotherhood be defiled;