Joshua 22:17

[Is] not the sin of Peor {enough for us}, from which we have not cleansed ourselves today, and for which a plague came to the congregation of Yahweh,

Numbers 25:1-18

When Israel dwelled in Shittim, the people began to prostitute [themselves] with the daughters of Moab.

Deuteronomy 4:3-4

Your eyes have seen what Yahweh did with [the case of] Baal Peor, for {each} man that followed after Baal Peor Yahweh your God destroyed from your midst.

Psalm 106:28-29

They also attached themselves to Baal of Peor, and they ate sacrifices offered to [the] dead.

Ezra 9:13-14

After all that has come upon us for our evil practices and for our great guilt--you, our God, have held back less than our guilt [deserved] and you have given us a remainder such as this.

1 Corinthians 10:8

nor commit sexual immorality, as some of them committed sexual immorality, and twenty-three thousand fell in one day,

1 Corinthians 10:11

Now these [things] happened to those [people] as an example, but are written for our instruction, on 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 was joined together to Baal Peor, and {Yahweh became angry} with Israel.
Deuteronomy 4:3
Your eyes have seen what Yahweh did with [the case of] Baal Peor, for {each} man that followed after Baal Peor Yahweh your God destroyed from your midst.
Psalm 106:28
They also attached themselves to Baal of Peor, and they ate sacrifices offered to [the] dead.

From which

Ezra 9:13
After all that has come upon us for our evil practices and for our great guilt--you, our God, have held back less than our guilt [deserved] and you have given us a remainder such as this.
1 Corinthians 10:8
nor commit sexual immorality, as some of them committed sexual immorality, and twenty-three thousand fell in one day,