Numbers 25:3

1Israel stayed in Shittim; and the people began to play the prostitute with the daughters of Moab;

2for they called the people to the sacrifices of their gods. The people ate and bowed down to their gods.

3Israel joined himself to Baal Peor, and the LORD’s anger burned against Israel.

4The LORD said to Moses, “Take all the chiefs of the people, and hang them up to the LORD before the sun, that the fierce anger of the LORD may turn away from Israel.”

5Moses said to the judges of Israel, “Everyone kill his men who have joined themselves to Baal Peor.”