For I will defend this city, to save it, for mine own sake, and for my servant David's sake.
For mine own sake - (cf. Isaiah 48:11.)
And for my servant David's sake - i:e., from regard to the promise and solemn covenant established with David, relating to the stability of his kingdom and the perpetuity of his royal line (2 Samuel 7:12-16; 1 Kings 11:12-13).