Numbers 25:4-5

4The Lord said to Moses, ‘Take hold of all the leaders of these people. Hang them up during the day so that they die and people see them. Do what I tell you, so that I will no longer be angry against the Israelites.’

5Moses told the officers of the Israelites, ‘Each of you, kill the men who have worshipped the god, Baal of Peor.’