1 Samuel 19:9-17

Then an evil spirit from the LORD came on Saul as he was sitting in his house with his spear in his hand, and David was playing the harp with his hand. Saul tried to pin David to the wall with the spear, but he escaped from Saul’s presence, so that Saul only stuck the spear into the wall. Then David fled and escaped that night. Then Saul sent messengers to David’s house to watch for him, so that he might kill him in the morning. But Michal, David’s wife, told him, “If you do not save your life tonight, tomorrow you will be killed.” So Michal let David down through the window, and he fled and escaped. And Michal took the household idol and laid it on the bed, put a pillow of goats’ hair at its head, and covered it with clothes. And when Saul sent messengers to take David, she said, “He is sick.” Then Saul sent the messengers [again] to see David, saying, “Bring him up to me on his bed [if necessary], so that I may kill him.” When the messengers came in, there was the household idol on the bed with a quilt of goats’ hair at its head. Saul said to Michal, “Why have you deceived me like this and let my enemy go, so that he has escaped?” Michal answered Saul, “He said to me, ‘Let me go! Why should I kill you?’ ”