2 Samuel 21:16-19

16And 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.

17But 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."

18After 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.

19And 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.