1 Samuel 17:28-33

Now Eliab his oldest brother heard when he spoke to the men; and Eliab’s anger burned against David and he said, “Why have you come down? And with whom have you left those few sheep in the wilderness? I know your insolence and the wickedness of your heart; for you have come down in order to see the battle.” But David said, “What have I done now? Was it not just a question?” Then he turned away from him to another and said the same thing; and the people answered the same thing as before. When the words which David spoke were heard, they told them to Saul, and he sent for him. David said to Saul, “Let no man’s heart fail on account of him; your servant will go and fight with this Philistine.” Then Saul said to David, “You are not able to go against this Philistine to fight with him; for you are but a youth while he has been a warrior from his youth.”