1 Samuel 18:18-23

But David said to Saul, “Who am I, and what is my life or my father’s family in Israel, that I should be the king’s son-in-law?” So it came about at the time when Merab, Saul’s daughter, should have been given to David, that she was given to Adriel the Meholathite for a wife. Now Michal, Saul’s daughter, loved David. When they told Saul, the thing was agreeable to him. Saul thought, “I will give her to him that she may become a snare to him, and that the hand of the Philistines may be against him.” Therefore Saul said to David, “For a second time you may be my son-in-law today.” Then Saul commanded his servants, “Speak to David secretly, saying, ‘Behold, the king delights in you, and all his servants love you; now therefore, become the king’s son-in-law.’ ” So Saul’s servants spoke these words to David. But David said, “Is it trivial in your sight to become the king’s son-in-law, since I am a poor man and lightly esteemed?”