1 Samuel 17:20-24

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.