17 Then Jesse said to his son David, "Take now for your brothers an ephah of this dried grain and these ten loaves, and run to your brothers at the camp. 18 And carry these ten cheeses to the captain of their thousand, and see how your brothers fare, and bring back news of them." 19 Now Saul and they and all the men of Israel were in the Valley of Elah, fighting with the Philistines.
Matthew Henry's Commentary on 1 Samuel 17:17-19
Commentary on 1 Samuel 17:12-30
(Read 1 Samuel 17:12-30)
Jesse little thought of sending his son to the army at that critical juncture; but the wise God orders actions and affairs, so as to serve his designs. In times of general formality and lukewarmness, every degree of zeal which implies readiness to go further, or to venture more in the cause of God than others, will be blamed as pride and ambition, and by none more than by near relations, like Eliab, or negligent superiors. It was a trial of David's meekness, patience, and constancy. He had right and reason on his side, and did not render railing for railing; with a soft answer he turned away his brother's wrath. This conquest of his own passion was more honourable than that of Goliath. Those who undertake great and public services, must not think it strange if they are spoken ill of, and opposed by those from whom they expect support and assistance. They must humbly go on with their work, in the face not only of enemies' threats, but of friends' slights and suspicions.