1 Samuel 18:23
And Saul’s servants spake those words in the ears of David. And David said, Seemeth it to you a light thing to be a king’s son in law, seeing that I am a poor man, and lightly esteemed? And Saul’s servants spake those words in the ears of David. And David said, Seemeth it to you a light thing to be a king’s son in law, seeing that I am a poor man, and lightly esteemed?
Becoming the king's son-in-law was no light thing but a great honor in David's reckoning. He saw himself as a poor man, lightly esteemed and of low standing. That poverty and obscurity made him feel unsuitable as a match for the king's daughter.