(37) Go, and the Lord be with thee.--This permission and blessing of King Saul recalls the Saul of old days, before the covenant between him and the Mighty One of Israel was broken, before the Spirit of the Lord had departed from him. It was a great act of courageous trust in the Glorious Arm which had, Saul knew, so often fought for Israel. We must bear in mind that it was no mere duel between two fighting men, an Israelite and a Philistine, but that the fortunes of the nation for an indefinite period were to be staked on this momentous single combat between a tried warrior of gigantic strength and a boy quite unaccustomed to martial exercises, and, as we shall presently see, a stranger even to a soldier's dress and martial equipment.

Verse 37. - Saul said unto David, Go. The king's consent was necessary before David could act as the champion of the Israelites. It was a courageous act in Saul to give his permission, considering the conditions of the combat (see ver. 9), but the two arguments here given persuaded him: the first, David's strong confidence in Jehovah, insuring his courage; and, secondly, the coolness and bravery he had shown in these dangerous encounters with savage animals.

17:31-39 A shepherd lad, come the same morning from keeping sheep, had more courage than all the mighty men of Israel. Thus God often sends good words to his Israel, and does great things for them, by the weak and foolish things of the world. As he had answered his brother's passion with meekness, so David answered Saul's fear with faith. When David kept sheep, he proved himself very careful and tender of his flock. This reminds us of Christ, the good Shepherd, who not only ventured, but laid down his life for the sheep. Our experience ought to encourage us to trust in God, and be bold in the way of duty. He that has delivered, does and will continue to do so. David gained leave to fight the Philistine. Not being used to such armour as Saul put upon him, he was not satisfied to go in that manner; this was from the Lord, that it might more plainly appear he fought and conquered in faith, and that the victory was from Him who works by the feeblest and most despised means and instruments. It is not to be inquired how excellent any thing is, but how proper. Let Saul's coat be ever so rich, and his armour ever so strong, what is David the better if they fit him not? But faith, prayer, truth, and righteousness; the whole armour of God, and the mind that was in Christ; are equally needful for all the servants of the Lord, whatever may be their work.And David said moreover,.... For the further confirmation of it, and as more strongly expressing his faith of it; not as owing to any natural strength or skill of his, but to the power of God, of whose assistance he made no question:

the Lord that delivered me out of the paw of the lion, and out of the paw of the bear; for to him he ascribes his deliverance from those savage creatures, and his victory over them, and on him he relied for help and salvation in the present case:

he will deliver me out of the hand of this Philistine; David did not go forth in his own name and strength, but in the name and strength of the Lord of hosts:

and Saul; seeing him so positive, and fully assured of victory:

said unto David, go, and the Lord be with thee; to help and assist him, to deliver him out of the hand of the Philistine, and give him victory over him; the Targum is,"the Word of the Lord be for thy help.''