1 Samuel 19:12 - Ellicott's Commentary On The Whole Bible

So Michal let David down. — The princess, his wife, knew well her father’s character, and conscious, now that the veil of his dark design was publicly lifted, that there was no hope for her husband any longer save in his instant flight, she “let David down through a window,” because the king’s guards were watching the door. With this desperate flight began those long weary wanderings, those perpetual risks of his life, which went on until the death of King Saul released David from his deadly enemy.