2 Chronicles 6:16-17

16Now therefore, O Lord God of Israel, keep with thy servant David my father that which thou hast promised him, saying, There shall not fail thee a man in my sight to sit upon the throne of Israel; yet so that thy children take heed to their way to walk in my law, as thou hast walked before me.1

17Now then, O Lord God of Israel, let thy word be verified, which thou hast spoken unto thy servant David.