The men of Israel said, Have you seen this man who is come up? surely to defy Israel is he come up: and it shall be, that the man who kills him, the king will enrich him with great riches, and will give him his daughter, and make his father's house free in Israel.
And so David's brother Eliab saw David's interest in this thing, and he said to David, "Who's watching over your sheep back there in the wilderness kid? You better get on home in a hurry. I know your heart, you're just-dad probably didn't send you down here. You're just down to see what a war looks like and you go home in a hurry." His big brother is trying to sort of protect him.