Deuteronomy 4:3

You saw how he killed everyone who worshiped the god Baal at Peor.

Numbers 25:1-9

While Israel remained at Shittim, the people indulged in sexual immorality with the Moabite women.

Numbers 26:64

Not a single one of the Israelites Moses and the priest Aaron had counted in the Desert of Sinai were there.

Numbers 31:16

Look, these women caused the Israelites, through the counsel of Balaam, to trespass against Jehovah in the matter of Peor. Thus the congregation of Jehovah experienced the plague.

Joshua 22:17

Do you remember our sin at Peor, when Jehovah punished his own people with an epidemic? We are still suffering because of that. Was that not enough sin?

Psalm 106:28-29

They joined in worshiping the god Baal while they were at Peor. They ate what was sacrificed to the dead.

Hosea 9:10

I found Israel like grapes in the wilderness. I saw your forefathers as the earliest fruit on the fig tree in its first season. They came to Baal-peor and devoted themselves to shame. They became as detestable as that which they loved.

Treasury of Scripture Knowledge

Summary

Your eyes have seen what the LORD did because of Baalpeor: for all the men that followed Baalpeor, the LORD thy God hath destroyed them from among you.

General references

Bible References

What the

Numbers 25:1
While Israel remained at Shittim, the people indulged in sexual immorality with the Moabite women.
Numbers 31:16
Look, these women caused the Israelites, through the counsel of Balaam, to trespass against Jehovah in the matter of Peor. Thus the congregation of Jehovah experienced the plague.
Joshua 22:17
Do you remember our sin at Peor, when Jehovah punished his own people with an epidemic? We are still suffering because of that. Was that not enough sin?
Psalm 106:28
They joined in worshiping the god Baal while they were at Peor. They ate what was sacrificed to the dead.
Hosea 9:10
I found Israel like grapes in the wilderness. I saw your forefathers as the earliest fruit on the fig tree in its first season. They came to Baal-peor and devoted themselves to shame. They became as detestable as that which they loved.

General references

Numbers 26:64
Not a single one of the Israelites Moses and the priest Aaron had counted in the Desert of Sinai were there.
Deuteronomy 3:29
So we stayed in the valley at Beth Peor.