2 Chronicles 20:1-3

Now it came about after this that the sons of Moab and the sons of Ammon, together with some of the Meunites, came to make war against Jehoshaphat. 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.