Numbers 25:2-6

For they invited the people to the sacrifices of their gods, and the people ate and bowed down to their gods.

So Israel became followers of Baal of Peor, and the Lord was angry with Israel.

And the Lord said to Moses, “Take all the leaders of the people and execute them in broad daylight before the Lord, so that the fierce anger of the Lord may turn away from Israel.”

So Moses said to the judges of Israel, “Each of you kill his men who have become followers of Baal of Peor.”

Then behold, one of the sons of Israel came and brought to his relatives a Midianite woman, in the sight of Moses and in the sight of the whole congregation of the sons of Israel, while they were weeping at the entrance of the tent of meeting.