And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be against him. Wherefore Saul said to David, Thou shalt this day be my son in law in the one of the twain.
Saul said, "I will have her marry him so she can trap him, and then the Philistines will attack him. That's why I tell David, 'You will become my son-in-law today.'"