Cross reference
1 Samuel 18:26
26 And when his servants told David these words, it pleased David well to be the king's son-in-law. And the days were not expired;
1 Samuel 18:21
21 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 a second time.