Why Moab and Midian United Against Israel in Balak

Midrash Tanchuma Buber, Balak 4:2

"And Moab said to the elders of Midian" (Numbers 22:4). And do you not find that the Midianites would wage war with the Moabites? As it is said, "who smote Midian in the field of Moab" (Genesis 36:35). And the hatred between them existed from of old. A parable of two dogs who were hostile to one another: a wolf came upon one of them. His companion said: If I do not help him, today it kills this one, and tomorrow it will come upon me. Therefore Moab joined together with Midian.

Themes

Biblical References