1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
19:11And Saul sent messengers to David's house, to watch him, and to slay him in the morning; and Michal David's wife told him, saying, If thou save not thy life to-night, to-morrow thou wilt be put to death.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.