And David said - This properly connects with the eleventh verse.

And David said to Saul, let no man's heart fail because of him,.... The Philistine, though so gigantic, mighty, and blustering: this he said within himself, so Kimchi; as David perceived the hearts of most, if not all, did, since none dared to go out and fight him, but on the contrary fled from him:

thy servant will go and fight with this Philistine; and therefore there need be no thought, care, or concern to look out for another man.

David's resolution to fight with Goliath; and his equipment for the conflict. - 1 Samuel 17:32. When in the presence of Saul, David said, "Let no man's heart (i.e., courage) fail on his account (on account of the Philistine, about whom they had been speaking): thy servant will go and fight with this Philistine."

And David said to Saul, Let no man's heart fail because of him; thy servant will go and fight with this Philistine.

17:32 Let no man's heart, and c. - It would have reflected upon his prince to say, Let not thy heart fail: therefore he speaks in general terms, Let no man's heart fail. A little shepherd, come but this morning from keeping sheep, has more courage than all the mighty men of Israel! Thus doth God often do great things for his people by the weak things of the world.

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.