2 Samuel 21:16-18

16Then Ishbi-benob, one of the descendants of the giant, whose bronze spear weighed about eight pounds and who wore new armor, intended to kill David.

17But Abishai son of Zeruiah came to his aid, struck the Philistine, and killed him. Then David’s men swore to him, “You must never again go out with us to battle. You must not extinguish the lamp of Israel.”

18After this, there was another battle with the Philistines at Gob. At that time Sibbecai the Hushathite killed Saph, who was one of the descendants of the giant.