NET
18 Then I will establish your dynasty, just as I promised your father David, ‘You will not fail to have a successor ruling over Israel.’
Darby
18 then will I establish the throne of thy kingdom, according as I have covenanted with David thy father, saying, There shall not fail thee a man to rule over Israel.
KJV
18 Then will I stablish the throne of thy kingdom, according as I have covenanted with David thy father, saying, There shall not fail thee a man [to be] ruler in Israel.