And David put his hand in his bag and took out a stone and slung it and struck the Philistine on his forehead. The stone sank into his forehead, and he fell on his face to the ground.
Goliath stalked forward with all his brass and iron grandeur; David ran lightly toward him with one aim only, to strike true. See how swiftly the mighty fall: while the giant prepared his stroke, David's stone found the one gap in his armor, sank into his forehead, and in a twinkling brought him down, a small thing, but God's providence made it sufficient, and life went out as easily as it had come in.
AI summary
Commenting on 1 Samuel 17:48-58
And David put his hand in his bag,.... The shepherd's scrip, in which he had put the five stones he took out of the brook: and took thence a stone; and put it into his sling he had in his hand: and slang it, and smote the Philistine in his forehead; it is made a difficulty of how he should smite him on his forehead...
smote the Philistine in his forehead--At the opening for the eyes--that was the only exposed part of his body.