1 Samuel 17:17-20

17:17 Jesse said to his son David, “Take your brothers this ephah of roasted grain and these ten loaves of bread; go quickly to the camp to your brothers. 17:18 Also take these ten portions of cheese to their commanding officer. Find out how your brothers are doing and bring back their pledge that they received the goods. 17:19 They are with Saul and the whole Israelite army in the valley of Elah, fighting with the Philistines.”

17:20 So David got up early in the morning and entrusted the flock to someone else who would watch over it. After loading up, he went just as Jesse had instructed him. He arrived at the camp as the army was going out to the battle lines shouting its battle cry.