2 Paralipomenon 20:12, 15, 17, 20-21

O our God, wilt thou not then judge them? As for us, we have not strength enough, to be able to resist this multitude, which cometh violently upon us. But as we know not what to do, we can only turn our eyes to thee.

And he said: Attend ye, all Juda, and you that dwell in Jerusalem, and thou king Josaphat: Thus saith the Lord to you: Fear ye not, and be not dismayed at this multitude. For the battle is not yours, but God's.

It shall not be you that shall fight: but only stand with confidence, and you shall see the help of the Lord over you, O Juda, and Jerusalem: fear ye not, nor be you dismayed: to-morrow you shall go out against them, and the Lord will be with you.

And they rose early in the morning, and went out through the desert of Thecua. And as they were marching Josaphat standing in the midst of them said: Hear me, ye men of Juda, and all the inhabitants of Jerusalem. Believe in the Lord your God, and you shall be secure. Believe his prophets, and all things shall succeed well. And he gave counsel to the people, and appointed the singing men of the Lord, to praise him by their companies, and to go before the army, and with one voice to say: Give glory to the Lord, for his mercy endureth for ever.