2 Chronicles 20:2-4

Then some came and reported to Jehoshaphat, saying, “A great multitude is coming against you from beyond the sea, out of Aram and behold, they are in Hazazon-tamar (that is Engedi).” Jehoshaphat was afraid and turned his attention to seek the LORD, and proclaimed a fast throughout all Judah. So Judah gathered together to seek help from the LORD; they even came from all the cities of Judah to seek the LORD.