1 Corinthians 5:1-6

It is generally reported that there is lewdness among you; and such lewdness as is not even mentioned among the Gentiles that a certain one has his father's wife.

Hebrews 12:15-16

taking care, lest any one slight the grace of God; lest any root of bitterness spring up and trouble you, and by this 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 generally reported that there is lewdness among you; and such lewdness as is not even mentioned among the Gentiles that a certain one has his father's wife.
Hebrews 12:15
taking care, lest any one slight the grace of God; lest any root of bitterness spring up and trouble you, and by this many be defiled;