2 Chronicles 20:1-4

Now it happened after this that the Moabites and the Ammonites, together with some of the Meunites, came to make war against Jehoshaphat. Then it was reported to Jehoshaphat, “A great multitude has come against you from beyond the [Dead] Sea, out of Aram (Syria); and behold, they are in Hazazon-tamar (that is, Engedi).” Then Jehoshaphat was afraid and set himself [determinedly, as his vital need] to seek the LORD; and he proclaimed a fast throughout all Judah. So [the people of] Judah gathered together to seek help from the LORD; indeed they came from all the cities of Judah to seek the LORD [longing for Him with all their heart].