1 Samuel 18:17-18

One day Saul said to David, “Here is Merab, my eldest daughter. I want to give her to you as your wife. Be brave and bold for my sake. Fight GOD’s battles!” But all the time Saul was thinking, “The Philistines will kill him for me. I won’t have to lift a hand against him.” David, embarrassed, answered, “Do you really mean that? I’m from a family of nobodies! I can’t be son-in-law to the king.”