2 Chronicles 20:30

So the realm of Jehoshaphat was quiet: for his God gave him rest round about.

After the Lord fought for Judah against its enemies, the realm of Jehoshaphat was quiet, for his God gave him rest and security and peace on every side. The quiet came because Judah believed in God and His prophets and went out praising His mercy with singers placed before the army. God set the armies of Ammon and Moab and Mount Seir against one another until they destroyed each other, so that Judah found only dead bodies with none escaped. Judah then returned to Jerusalem with joy and with music to the house of the Lord. When the surrounding kingdoms heard that God had fought for Israel against its enemies, the fear of God fell upon them.