2 Chronicles 20:1-4

Some time later the Moabites and Ammonites, accompanied by Meunites, joined forces to make war on Jehoshaphat. Jehoshaphat received this intelligence report: “A huge force is on its way from beyond the Dead Sea to fight you. There’s no time to waste—they’re already at Hazazon Tamar, the oasis of En Gedi.” Shaken, Jehoshaphat prayed. He went to GOD for help and ordered a nationwide fast. The country of Judah united in seeking GOD’s help—they came from all the cities of Judah to pray to GOD.