Now Saul's daughter Michal1 was in love with David, and when they told Saul about it, he was pleased.2
References for 1 Samuel 18:20
"I will give her to him," he thought, "so that she may be a snare3 to him and so that the hand of the Philistines may be against him." So Saul said to David, "Now you have a second opportunity to become my son-in-law."
References for 1 Samuel 18:21
Then Saul ordered his attendants: "Speak to David privately and say, 'Look, the king is pleased with you, and his attendants all like you; now become his son-in-law.' "
They repeated these words to David. But David said, "Do you think it is a small matter to become the king's son-in-law?4 I'm only a poor man and little known."
References for 1 Samuel 18:23
When Saul's servants told him what David had said,
Saul replied, "Say to David, 'The king wants no other price5 for the bride than a hundred Philistine foreskins, to take revenge6 on his enemies.' " Saul's plan7 was to have David fall by the hands of the Philistines.
References for 1 Samuel 18:25
When the attendants told David these things, he was pleased to become the king's son-in-law. So before the allotted time elapsed,
David and his men went out and killed two hundred Philistines. He brought their foreskins and presented the full number to the king so that he might become the king's son-in-law. Then Saul gave him his daughter Michal8 in marriage.
References for 1 Samuel 18:27
When Saul realized that the LORD was with David and that his daughter Michal9 loved David,
References for 1 Samuel 18:28