SEV Biblia, Chapter 17:50
Así venció David al filisteo con honda y piedra; e hirió al filisteo y lo mató, sin tener David cuchillo en su mano.
John Gill's Bible Commentary
Ver. 50. So David prevailed over the Philistine with a sling and with a stone , etc.] And with them only, without any other warlike weapon: and smote the Philistine, and slew him ; smote him with the stone, which brought him to the ground, and then slew him with his own sword, as afterwards related: but [there was] no sword in the hand of David ; when he engaged with the Philistine, and smote him, for he had put off all his armour, ( 1 Samuel 17:39).
Matthew Henry Commentary
Verses 48-58 - See how frail and uncertain life is, even when a man thinks himsel best fortified; how quickly, how easily, and by how small a matter, the passage may be opened for life to go out, and death to enter! Let no the strong man glory in his strength, nor the armed man in his armour God resists the proud, and pours contempt on those who defy him and his people. No one ever hardened his heart against God and prospered. The history is recorded, that all may exert themselves for the honour of God, and the support of his cause, with bold and unshaken reliance of him. There is one conflict in which all the followers of the Lamb are and must be engaged; one enemy, more formidable than Goliath, stil challenges the armies of Israel. But "resist the devil, and he wil flee from you." God forth to battle with the faith of David, and the powers of darkness shall not stand against you. But how often is the Christian foiled through an evil heart of unbelief __________________________________________________________________
Original Hebrew
ויחזק 2388 דוד 1732 מן 4480 הפלשׁתי 6430 בקלע 7050 ובאבן 68 ויך 5221 את 853 הפלשׁתי 6430 וימיתהו 4191 וחרב 2719 אין 369 ביד 3027 דוד׃ 1732