NET

16 Now, O Lord God of Israel, keep the promise you made to your servant, my father David, when you said, ‘You will never fail to have a successor ruling before me on the throne of Israel, provided that your descendants watch their step and obey my law as you have done.’

Darby

16 And now, Jehovah, 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 on the throne of Israel, if only thy sons take heed to their way to walk in my law, as thou hast walked before me.

KJV

16 Now 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.