1 Samuel 19:10-12

10And Saul sought to smite David and the wall with the spear; but he slipped away out of Saul's presence, and he smote the spear into the wall. And David fled, and escaped that night.

11And Saul sent messengers to David's house, to watch him, and to slay him in the morning; and Michal David's wife told him, saying, If thou save not thy life to-night, to-morrow thou wilt be put to death.

12And Michal let David down through a window; and he went, and fled and escaped.