2 Samuel 7:28

And now, O Lord God, thou [art] that God
Who is the Lord of hosts, and the God of Israel, that has promised and is able to perform, and is faithful to his promise:

and thy words be true;
are truly, punctually, and faithfully performed, never fail:

and thou hast promised this goodness unto thy servant;
concerning building and establishing his house. David repeats this promise as being greatly affected with it, and fully assured of the performance of it.