2 Chronicles 20:1-4

After this, the armies of the Moabites, Ammonites, and some of the Meunites declared war on Jehoshaphat. Messengers came and told Jehoshaphat, “A vast army from Edom is marching against you from beyond the Dead Sea. They are already at Hazazon-tamar.” (This was another name for En-gedi.) Jehoshaphat was terrified by this news and begged the LORD for guidance. He also ordered everyone in Judah to begin fasting. So people from all the towns of Judah came to Jerusalem to seek the LORD’s help.