1 Samuel 17:27

If you don't mind, however, let us refer to a theme in our preaching earlier, so that by bringing the whole story to mind we may learn that nothing is stronger than the person protected by help from on high, and nothing is more vulnerable than the person deprived of this help, surrounded though he may be with countless armies. So this man David, quite young though he was and living in his father's house on account of his immaturity, heard the call of destiny for his virtue to become conspicuous; he was urged by his father to observe his brothers; he obeyed and was sent off to them. So, after coming on the scene to observe them, he saw the battle line drawn against the foreigner Goliath and the whole people of Saul's company withdrawing in fright and the king himself placed in particular danger. For a while he was happy to be an onlooker and went to see the strange and unusual sight of one person pitted against so many thousands. But his brothers could not tolerate the manliness of his bearing; they were moved to hatred and said to him, "Have you come for no other reason than to see the war." You haven't really come to observe us.Notice, however, his good sense and great restraint. Instead of saying anything rash to them, anything harsh, he extinguished the flame of their hatred; he mollified their hatred by saying, "Isn't it only a word?" I mean, surely you haven't observed me taking position in the ranks? I simply wanted to watch and find out the source of this man's extraordinary frenzy. "After all, who is this foreigner who reproaches the ranks of the living God?" Then, on hearing the man's awful arrogance and the unspeakable cowardice of those who had gone with Saul, he said, "What will be given to the man who cuts off his head?" He showed great boldness of spirit through these words and caused amazement in every one. […]

The people, however, reported to him the same word, etc. With the Lord clearly teaching, and proclaiming the ejection and downfall of the prince of the world, all the people indeed, as the evangelist recalls, were amazed, hearing him: but the envious lawyers and chief …

And the people answered him after this manner,.... Told him what was proposed to be done in honour to the man that should attempt to kill him, and succeed: saying, so shall it be done to the man that killeth him; as before related, that he should be enriched, marry the king's daughter, and his family be ennobled, 1Sa 17:25.