1 Samuel 18:20-21

MKJV(i) 20 And Saul's daughter Michal loved David. And they told Saul, and the thing pleased him. 21 And Saul said, I will give her to him, so that she may be a trap to him, and so that the hand of the Philistines may be against him. And Saul said to David a second time, Today you shall be my son-in-law.