2 Chronicles 20:6,7

And said, O Lord God, &c. Jehoshaphat himself was the mouth of the congregation to God, and did not devolve the work upon his chaplains. For though the kings were forbidden to burn incense, they were allowed to pray and preach. Art thou not God in heaven, &c. Which none of the gods of the heathen are. Is not thy dominion supreme, over kingdoms themselves, and universal, over all kingdoms, even those of the heathen, that know thee not ? Art thou not our God? In covenant with us? To whom should we seek, to whom should we trust for relief, but to him whom we have chosen for our God, and who has chosen us for his people? Who gavest it to the seed of Abraham thy friend To whom thou didst engage thyself to be his friend, and the friend of his seed for ever, and therefore we trust thou wilt not forsake us, his posterity.