1 Samuel 18:18-23

18And David said to Saul, Who am I? and what is my life, [or] my father's family in Israel, that I should be son-in-law to the king?

19And it came to pass at the time when Merab Saul's daughter should have been given to David, that she was given to Adriel the Meholathite as wife.

20And Michal Saul's daughter loved David; and they told Saul, and the thing was right in his sight.

21And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be upon him. And Saul said to David, Thou shalt this day be my son-in-law a second time.

22And Saul commanded his servants, Speak with David secretly, saying, Behold, the king has delight in thee, and all his servants love thee: now therefore be the king's son-in-law.

23And Saul's servants spoke those words in the ears of David. And David said, Is it a light thing in your eyes to be the king's son-in-law, seeing that I am a poor man, and lightly esteemed?