1 Samuel 19:11-14

And Saul sent messengers unto 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 slain.

So Michal let David down through the window: and he went, and fled, and escaped.

And Michal took the teraphim, and laid it in the bed, and put a pillow of goats’ hair at the head thereof, and covered it with the clothes.