Charles Ellicott Commentary 2 Kings 19:34

"For I will defend this city to save it, for mine own sake, and for my servant David`s sake." — 2 Kings 19:34 (ASV)

For I will defend. — And I will cover (with a shield). (Isaiah 38:6; 2 Kings 20:6.)

For my servant David’s sake. — See 1 Kings 11:12–13, and the promise in 2 Samuel 7:0.