Numbers 25:17

Then Moab said to the elders of Midian, “Now this assembly will lick up all that is around us, as the ox licks up the grass of the field.” And Balak the son of Zippor was king of Moab at that time.

“Take full vengeance for the sons of Israel on the Midianites; afterward you will be gathered to your people.”

Then the sons of Israel did what was evil in the eyes of Yahweh; and Yahweh gave them into the hands of Midian seven years.

Nor let us act in sexual immorality, as some of them did, and twenty-three thousand fell in one day.