God defeats Moab and Ammon
The Ammonites and Moabites fought against the inhabitants of Mount Seir, then fought against one another. The Jews took the spoil and returned to Jerusalem.
Key passages
2 Ch 20:20–30

And they rose up early in the morning and went out to the desert of Tekoa. And when they went out, Jehoshaphat stood and said, “Hear me, O Judah and inhabitants of Jerusalem! Believe in Yahweh your God, and you shall be established! Believe in his prophets, and you …