1 Samuel 19:9-10
9-10But then a black mood from God settled over Saul and took control of him. He was sitting at home, his spear in his hand, while David was playing music. Suddenly, Saul tried to skewer David with his spear, but David ducked. The spear stuck in the wall and David got away. It was night.
11-14Saul sent men to David's house to stake it out and then, first thing in the morning, to kill him. But Michal, David's wife, told him what was going on. "Quickly now—make your escape tonight. If not, you'll be dead by morning!" She let him out of a window, and he made his escape. Then Michal took a dummy god and put it in the bed, placed a wig of goat's hair on its head, and threw a quilt over it. When Saul's men arrived to get David, she said, "He's sick in bed."