2 Chronicles 20:17 in the King James Version
Ye shall not need to fight in this battle: set yourselves, stand ye still, 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 will be with you.
Context
16 Tomorrow, go down against them. Behold, they are coming up by the ascent of Ziz. You will find them at the end of the valley, before the wilderness of Jeruel.
17 You will not need to fight this battle. Set yourselves, stand still, and see the salvation of the LORD with you, O Judah and Jerusalem. Don’t be afraid, nor be dismayed. Go out against them tomorrow, for the LORD is with you.’”
18 Jehoshaphat bowed his head with his face to the ground; and all Judah and the inhabitants of Jerusalem fell down before the LORD, worshiping the LORD.