1 Samuel 18:18-23

18But David said to Saul, ‘I am not an important person. My family and my father's clan are not important either. I do not deserve to marry the king's daughter.’

19When the time came for Merab to marry David, Saul told her to marry a different man. He gave her to Adriel from Meholah to be his wife.

20Saul had another daughter, Michal, and she loved David. When somebody told Saul about this, he was very happy.

21He thought, ‘I will let David marry her. I will use her as a trap that will catch him. I will give the Philistines a chance to kill him.’ So Saul said to David, ‘Now you have another chance to marry one of my daughters.’

22Saul told his servants to say secretly to David, ‘The king is pleased with you. His servants all like you. You should now marry the king's daughter.’

23Saul's servants said this to David. But David replied, ‘It is a great honour for someone to marry the king's daughter. But I am poor. I am not important enough.’