'David and His Descendants' in the Bible

He is a tower of salvation for His king;He shows loyalty to His anointed,to David and his descendants forever.

And their blood will return on the head of Joab and on the head of his descendants forever, but for David and his descendants and for his house and his throne, [there] will be peace forever from Yahweh."

Don’t you know that the Lord God of Israel gave the kingship over Israel to David and his descendants forever by a covenant of salt?

He gives great victories to His king;He shows loyalty to His anointed,to David and his descendants forever.