Joshua 22:17

Is the wrongdoing (idolatry) of Peor not enough for us, from which we have not cleansed ourselves to this day, even though the affliction [in which twenty-four thousand died] came on the congregation of the Lord,

Numbers 25:1-18

Israel settled and remained in Shittim, and the people began to play the prostitute with the women of Moab [by being unfaithful to God].

Deuteronomy 4:3-4

Your eyes have seen what the Lord did at Baal-peor; for all the men who followed [and participated in the worship of] Baal of Peor, the Lord your God destroyed them from among you,

Psalm 106:28-29


They joined themselves also to [the idol] Baal of Peor,
And ate sacrifices offered to the dead.

Ezra 9:13-14

And after everything that has come upon us for our evil deeds and for our great guilt, since You our God have punished us less than our wrongdoings deserve, and have given us survivors like these,

1 Corinthians 10:8

We must not indulge in [nor tolerate] sexual immorality, as some of them did, and twenty-three thousand [suddenly] fell [dead] in a single day!

1 Corinthians 10:11

Now these things happened to them as an example and warning [to us]; they were written for our instruction [to admonish and equip us], upon whom the ends of the ages have come.

Treasury of Scripture Knowledge

Summary

Is the iniquity of Peor too little for us, from which we are not cleansed until this day, although there was a plague in the congregation of the LORD,

Bible References

Is the iniquity

Numbers 25:3
So Israel joined themselves to Baal of Peor [in worship]. And the anger of the Lord was kindled against Israel.
Deuteronomy 4:3
Your eyes have seen what the Lord did at Baal-peor; for all the men who followed [and participated in the worship of] Baal of Peor, the Lord your God destroyed them from among you,
Psalm 106:28

They joined themselves also to [the idol] Baal of Peor,
And ate sacrifices offered to the dead.

From which

Ezra 9:13
And after everything that has come upon us for our evil deeds and for our great guilt, since You our God have punished us less than our wrongdoings deserve, and have given us survivors like these,
1 Corinthians 10:8
We must not indulge in [nor tolerate] sexual immorality, as some of them did, and twenty-three thousand [suddenly] fell [dead] in a single day!