Saul sent messengers to David's house, to watch him, and to kill him in the morning: and Michal, David's wife, told him, saying, If you don't save your life tonight, tomorrow you will be slain.
and Michal, David's wife, told him, saying, if thou save not thy life tonight, tomorrow thou shalt be slain; meaning, if he did not take the benefit and advantage of the night to make his escape, he would not be able to do it in the morning; the house being so beset, as she perceived, by persons whom she might suspect were sent by Saul to destroy him, knowing the ill will her father bore to him, or a messenger at the same time might be dispatched to her, either from her brother Jonathan, or from one of her friends at court, acquainting her with the design against David, and the danger he was in. Upon this occasion David penned the fifty ninth psalm, see Psalms 59:1.