1 Samuel 19:12-18

So she let David down out of a window, and he ran away and escaped. Then Michal took an idol, laid it on the bed, covered it with clothes, and put goats’ hair at its head. Saul sent messengers to take David prisoner, but Michal said, “He is sick.” Saul sent them back to see David, saying, “Bring him to me on his bed so I can kill him.” When the messengers entered David’s house, they found just an idol on the bed with goats’ hair on its head. Saul said to Michal, “Why did you trick me this way? You let my enemy go so he could run away!” Michal answered Saul, “David told me if I did not help him escape, he would kill me.” After David had escaped from Saul, he went to Samuel at Ramah and told him everything Saul had done to him. Then David and Samuel went to Naioth and stayed there.