1 Samuel 18:18 (21st Century KJV)
18And David said unto 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?"

Saul had made an offer to David to give his eldest daughter Merab to him if David would fight in battle. Saul had planned on David being killed, but that did not happen so Saul gave his daughter to another man. Later Saul made another offer for his second daughter Michal, which David also fulfilled. This time David was given Michal who loved David dearly. With Saul’s plans defeated, Saul became an enemy of David.

Who am I? It is a question some may have asked themselves along the way of life. When God asked Moses to speak for Israel to the Pharaoh, he responded “"Who am I, that I should go unto Pharaoh, and that I should bring forth the children of Israel out of Egypt?" We should remember Moses was raised in the home of a Pharaoh. He had been treated as royalty; had access to the best education of the time; and was groomed to speak with those of importance. Yet Moses, like David was defining himself. God finally responded to Moses, “Who has made man’s mouth? Or who makes the mute, the deaf, the seeing, or the blind? Have not I, the LORD? Now therefore, go, and I will be with your mouth and teach you what you shall say.” God wanted Moses to know He created Moses and God was capable of anything in a person’s life. Moses should have been asking, “Who am I to define myself when the Lord God Almighty created me?” In Isaiah 45:11-12 it says, “This is what the Lord says—the Holy One of Israel and your Creator: “Do you question what I do for my children? Do you give me orders about the work of my hands? I am the one who made the earth and created people to live on it. With my hands I stretched out the heavens. All the stars are at my command.” Are you defining yourself by your own works or the works of God? Let God show you who you are in Him. Pray that God might reveal your true self. Pray to acknowledge you are His creation, His clay that He molded.