1 Samuel 19:12-18

So she helped him climb out through a window, and he fled and escaped. Then she took an idol and put it in his bed, covered it with blankets, and put a cushion of goat’s hair at its head. When the troops came to arrest David, she told them he was sick and couldn’t get out of bed. But Saul sent the troops back to get David. He ordered, “Bring him to me in his bed so I can kill him!” But when they came to carry David out, they discovered that it was only an idol in the bed with a cushion of goat’s hair at its head. “Why have you betrayed me like this and let my enemy escape?” Saul demanded of Michal. “I had to,” Michal replied. “He threatened to kill me if I didn’t help him.” So David escaped and went to Ramah to see Samuel, and he told him all that Saul had done to him. Then Samuel took David with him to live at Naioth.