1st Samuel 17:51 Therefore David ran, and stood upon the Philistine, and took his sword, and drew it out of the sheath thereof, and slew him, and cut off his head therewith. And when the Philistines saw their champion was dead, they fled.
[Patriarchs & Prophets pp 648] Amazement spread along the lines of the two armies. They had been confident that David would be slain; but when the stone went whizzing through the air, straight to the mark, they saw the mighty warrior tremble, and reach forth his hands, as if he were struck with sudden blindness. The giant reeled, and staggered, and like a smitten oak, fell to the ground. David did not wait an instant. He sprang upon the prostrate form of the Philistine, and with both hands laid hold of Goliath's heavy sword.
A moment before, the giant had boasted that with it he would sever the youth's head from his shoulders and give his body to the fowls of the air. Now it was lifted in the air, and then the head of the boaster rolled from his trunk, and a shout of exultation went up from the camp of Israel. The Philistines were smitten with terror, and the confusion which ensued resulted in a precipitate retreat.
The shouts of the triumphant Hebrews echoed along the summits of the mountains, as they rushed after their fleeing enemies; and they “pursued the Philistines, until thou come to the valley, and to the gates of Ekron. And the wounded of the Philistines fell down by the way to Shaaraim, even unto Gath, and unto Ekron. And the children of Israel returned from chasing after the Philistines, and they spoiled their tents. And David took the head of the Philistine, and brought it to Jerusalem; but he put his armor in his tent.”
1st Samuel 17:53 And the children of Israel returned from chasing after the Philistines, and they spoiled their tents. 55 And when Saul saw David go forth against the Philistine, he said unto Abner, the captain of the host, Abner, whose son is this youth? And Abner said, As thy soul liveth, O king, I cannot tell.
May God add His blessing to the study of His word. "Good night" and God bless!