Bede

Moreover, as the Lord lives, and as your soul lives, etc. He was separated from death by only a single step, that is, by the wall of the house in which he was staying, when (as the title of the fifty-eighth psalm also contains) Saul sent and watched him, seeking to kill him. But immediately slipping from death through a window, he was rescued and fled away, saved completely, so that by the Lord's mercy, what was foretold in the same title might happen: "Do not destroy David," in the title's inscription. …

Commentary on Samuel ↗