1 Samuel 18:17-30 - David Marries Saul's Daughter Michal
17 Then said Saul to David, "Behold, my eldest daughter Merab: her I will give thee to wife; only play the man and fight the LORD's battles." For Saul thought, "Mine hand shall not be upon him, but the hand of the Philistines."
18 And David answered Saul, "What am I? And what is my life or the kindred of my father in Israel, that I should be son-in-law to the king?" 19 Howbeit, when the time was come that Merab, Saul's daughter, should have been given to David she was given unto Adriel, a Meholathite, to wife.
20 Nevertheless, Michal Saul's daughter loved David. And when it was showed Saul, the thing pleased him well. 21 And he said, "I will give him her that she may be a snare to him, to bring the hand of the Philistines upon him." And Saul said to David, "Thou shalt this day be my son-in-law again."
22 And Saul commanded his servants to commune with David secretly and say, "Behold, the king hath a favour to thee, and all his servants love thee - be therefore the king's son-in-law." 23 And Saul's servants spake those words in the ears of David. But David answered, "Seemeth it to you a light thing to be the king's son-in-law, when I am a poor man and of small reputation?"
24 And Saul's servants told him again, saying, "Of this manner answered David."
25 Then said Saul, "This wise say to David: 'The king careth for no other dowry but for a hundred foreskins of the Philistines, to be avenged of the king's enemies." For Saul thought to make David fall into the hands of the Philistines.
26 Then his servants told David these words, and it pleased David well to be the king's son-in-law. 27 And shortly after that, David arose with his men, and went, and slew of the Philistines, two hundred men; and brought their foreskins, and satisfied the king thereof to be his son-in-law. And so Saul gave him Michal his daughter to wife. 28 And when Saul saw and understood, how that the LORD was with David, and that Michal his daughter loved him, 29 he was the more afraid of David, and became David's enemy forever.
30 And when the Philistines went out to war, David behaved himself wiselier than all the servants of Saul: so that his name was much set by.