1 Samuel 18:17-27

17 Then Saul said to David, "Here is my older daughter Merab. I will give her to you as your wife on condition that you serve me as a brave and loyal soldier, and fight the Lord's battles." (Saul was thinking that in this way the Philistines would kill David, and he would not have to do it himself.)
18 David answered, "Who am I and what is my family that I should become the king's son-in-law?"
19 But when the time came for Merab to be given to David, she was given instead to a man named Adriel from Meholah.
20 Saul's daughter Michal, however, fell in love with David, and when Saul heard of this, he was pleased.
21 He said to himself, "I'll give Michal to David; I will use her to trap him, and he will be killed by the Philistines." So for the second time Saul said to David, "You will be my son-in-law."
22 He ordered his officials to speak privately with David and tell him, "The king is pleased with you and all his officials like you; now is a good time for you to marry his daughter."
23 So they told this to David, and he answered, "It's a great honor to become the king's son-in-law, too great for someone poor and insignificant like me."
24 The officials told Saul what David had said,
25 and Saul ordered them to tell David: "All the king wants from you as payment for the bride are the foreskins of a hundred dead Philistines, as revenge on his enemies." (This was how Saul planned to have David killed by the Philistines.)
26 Saul's officials reported to David what Saul had said, and David was delighted with the thought of becoming the king's son-in-law. Before the day set for the wedding,
27 David and his men went and killed two hundred Philistines. He took their foreskins to the king and counted them all out to him, so that he might become his son-in-law. So Saul had to give his daughter Michal in marriage to David.

1 Samuel 18:17-27 Meaning and Commentary

INTRODUCTION TO FIRST SAMUEL 18

This chapter gives an account of the respect shown to David by Saul and Jonathan, by the servants of Saul, and all the people, and of what was said in his praise in the songs of the women, 1Sa 18:1-7; which latter gave Saul a great offence, and upon which he envied him, and eyed him, and indeed sought his life, and removed him from him; and yet still he continued the darling of the people, behaving wisely among them, which greatly embarrassed Saul, that be knew not what to do, 1Sa 18:8-16; he proposed his eldest daughter to him in marriage, which he had a claim to by killing the Philistine, and then he cheated him by giving her to another, 1Sa 18:17-19; and then he offered his youngest daughter to him, on condition that he would bring him an hundred foreskins of the Philistines, execution of which he thought his life would be exposed to danger, which yet he performed, 1Sa 18:20-27; and having the affection of his wife, and the good esteem of the servants of Saul, Saul was more afraid of him, and became his enemy, 1Sa 18:28-30.

Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.