1 Samuel 17:20-27

So David left the sheep with another shepherd and set out early the next morning with the gifts, as Jesse had directed him. He arrived at the camp just as the Israelite army was leaving for the battlefield with shouts and battle cries. Soon the Israelite and Philistine forces stood facing each other, army against army. David left his things with the keeper of supplies and hurried out to the ranks to greet his brothers. As he was talking with them, Goliath, the Philistine champion from Gath, came out from the Philistine ranks. Then David heard him shout his usual taunt to the army of Israel. As soon as the Israelite army saw him, they began to run away in fright. “Have you seen the giant?” the men asked. “He comes out each day to defy Israel. The king has offered a huge reward to anyone who kills him. He will give that man one of his daughters for a wife, and the man’s entire family will be exempted from paying taxes!” David asked the soldiers standing nearby, “What will a man get for killing this Philistine and ending his defiance of Israel? Who is this pagan Philistine anyway, that he is allowed to defy the armies of the living God?” And these men gave David the same reply. They said, “Yes, that is the reward for killing him.”