Ought you not to know
They did know what he afterwards says, but he would have them consider and acknowledge it:
that the Lord God of Israel gave the kingdom over Israel to David for
to him and his seed, particularly to the Messiah, that should spring from him; but whether Abijah had this in view is a question, see ( 2 Samuel 7:13 2 Samuel 7:16 )
even to him and to his sons by a covenant of salt?
that is, a perpetual one, which was inviolable, and never to be made void; called so, because salt preserves from corruption and putrefaction, and because made use of in sacrifices offered when covenants were made; the Targum is,
``as salt waters, which never lose their saltness.''