Numbers 22:4

22:4 So the Moabites said to the elders of Midian, “Now this mass of people will lick up everything around us, as the bull devours the grass of the field. Now Balak son of Zippor was king of the Moabites at this time.

Numbers 25:18

25:18 because they bring trouble to you by their treachery with which they have deceived you in the matter of Peor, and in the matter of Cozbi, the daughter of a prince of Midian, their sister, who was killed on the day of the plague that happened as a result of Peor.”