Saul sent messengers to David's house, to watch him, and to kill him in the morning: and Michal, David's wife, told him, saying, If you don't save your life tonight, tomorrow you will be slain.
"Save your life tonight ... tomorrow you will be killed"  (1 Samuel 19:11).  One may wonder just how Michal had received the information which led to this warning of her husband; but such an incident as the king's trying to kill his son-in-law would have been reported all over the city in a matter of minutes after it happened.