2 Chronicles 20:29
And the fear of God was on all the kingdoms of those countries, when they had heard that the LORD fought against the enemies of Israel. And the fear of God was on all the kingdoms of those countries, when they had heard that the LORD fought against the enemies of Israel.
The invading host was Ammon, Moab, and Mount Seir, whom the Lord set against one another until they destroyed each other, so that when Judah looked out there were only dead bodies to be found. Jehoshaphat then led every man of Judah and Jerusalem back to Jerusalem with joy, because the Lord had made them to rejoice over their enemies. They came to the house of the Lord with psalteries and harps and trumpets.
When the kingdoms of the surrounding countries heard that the Lord had fought against the enemies of Israel, the fear of God fell upon them all. That deliverance came through Judah's faith and trust in God, and by it His power was made known beyond Judah itself. So the realm of Jehoshaphat was quiet, because his God gave him rest round about.