2 Samuel 21:16-19

16And Ishbi-Benob, one of the descendants of Rapha, whose bronze spearhead weighed three hundred shekels and who was armed with a new sword, said he would kill David.

17But Abishai son of Zeruiah came to David’s rescue; he struck the Philistine down and killed him. Then David’s men swore to him, saying, “Never again will you go out with us to battle, so that the lamp of Israel will not be extinguished.”

18In the course of time, there was another battle with the Philistines, at Gob. At that time Sibbekai the Hushathite killed Saph, one of the descendants of Rapha.

19In another battle with the Philistines at Gob, Elhanan son of Jair the Bethlehemite killed the brother of Goliath the Gittite, who had a spear with a shaft like a weaver’s rod.