2 Chronicles 20:3, 12, 15, 22, 30

And Jehoshaphat feared, and set himself to seek unto Jehovah; and he proclaimed a fast throughout all Judah.

O our God, wilt thou not judge them? for we have no might against this great company that cometh against us; neither know we what to do: but our eyes are upon thee.

and he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat: Thus saith Jehovah unto you, Fear not ye, neither be dismayed by reason of this great multitude; for the battle is not yours, but God’s.

And when they began to sing and to praise, Jehovah set liers-in-wait against the children of Ammon, Moab, and mount Seir, that were come against Judah; and they were smitten.

So the realm of Jehoshaphat was quiet; for his God gave him rest round about.