Who killed the Giant?

2 Samuel 21:15–22 ESV

15 There was war again between the Philistines and Israel, and David went down together with his servants, and they fought against the Philistines. And David grew weary. 16 And Ishbi-benob, one of the descendants of the giants, whose spear weighed three hundred shekels of bronze, and who was armed with a new sword, thought to kill David. 17 But Abishai the son of Zeruiah came to his aid and attacked the Philistine and killed him. Then David’s men swore to him, “You shall no longer go out with us to battle, lest you quench the lamp of Israel.” 18 After this there was again war with the Philistines at Gob. Then Sibbecai the Hushathite struck down Saph, who was one of the descendants of the giants. 19 And there was again war with the Philistines at Gob, and Elhanan the son of Jaare-oregim, the Bethlehemite, struck down Goliath the Gittite, the shaft of whose spear was like a weaver’s beam. 20 And there was again war at Gath, where there was a man of great stature, who had six fingers on each hand, and six toes on each foot, twenty-four in number, and he also was descended from the giants. 21 And when he taunted Israel, Jonathan the son of Shimei, David’s brother, struck him down. 22 These four were descended from the giants in Gath, and they fell by the hand of David and by the hand of his servants.

1 Samuel 17:48–51 ESV

48 When the Philistine arose and came and drew near to meet David, David ran quickly toward the battle line to meet the Philistine. 49 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. 50 So David prevailed over the Philistine with a sling and with a stone, and struck the Philistine and killed him. There was no sword in the hand of David. 51 Then David ran and stood over the Philistine and took his sword and drew it out of its sheath and killed him and cut off his head with it. When the Philistines saw that their champion was dead, they fled.

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2 Samuel 23:18–23 ESV

18 Now Abishai, the brother of Joab, the son of Zeruiah, was chief of the thirty. And he wielded his spear against three hundred men and killed them and won a name beside the three. 19 He was the most renowned of the thirty and became their commander, but he did not attain to the three. 20 And Benaiah the son of Jehoiada was a valiant man of Kabzeel, a doer of great deeds. He struck down two ariels of Moab. He also went down and struck down a lion in a pit on a day when snow had fallen. 21 And he struck down an Egyptian, a handsome man. The Egyptian had a spear in his hand, but Benaiah went down to him with a staff and snatched the spear out of the Egyptian’s hand and killed him with his own spear. 22 These things did Benaiah the son of Jehoiada, and won a name beside the three mighty men. 23 He was renowned among the thirty, but he did not attain to the three. And David set him over his bodyguard.

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