2 Chronicles 20:15
King James Version
“And he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat, Thus saith the LORD unto you, Be not afraid nor dismayed by reason of this great multitude; for the battle not yours, but God’s.”
Context
12O 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 upon thee.
13And all Judah stood before the LORD, with their little ones, their wives, and their children.
14Then upon Jahaziel the son of Zechariah, the son of Benaiah, the son of Jeiel, the son of Mattaniah, a Levite of the sons of Asaph, came the Spirit of the LORD in the midst of the congregation;
15And he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat, Thus saith the LORD unto you, Be not afraid nor dismayed by reason of this great multitude; for the battle not yours, but God’s.
16To morrow go ye down against them: behold, they come up by the cliff of Ziz; and ye shall find them at the end of the brook, before the wilderness of Jeruel.
17Ye shall not to fight in this set yourselves, stand ye and see the salvation of the LORD with you, O Judah and Jerusalem: fear not, nor be dismayed; to morrow go out against them: for the LORD with you.
18And Jehoshaphat bowed his head with face to the ground: and all Judah and the inhabitants of Jerusalem fell before the LORD, worshipping the LORD.