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.And David was the youngest,.... For the sake of whom this account is given of Jesse and his family, and who after this makes a considerable figure in the camp and court of Saul:

and the three eldest followed Saul; as before related, and which is repeated, that it might be observed that they only of Jesse's sons followed Saul; not David particularly, but who was providentially sent to the army at the time the Philistine was defying it.