1 Chronicles 20:5
And there was war again with the Philistines; and Elhanan the son of Jair slew Lahmi the brother of Goliath the Gittite, whose spear staff was like a weaver’s beam. And there was war again with the Philistines; and Elhanan the son of Jair slew Lahmi the brother of Goliath the Gittite, whose spear staff was like a weaver’s beam.
The verse belongs to the record of incidents in David's life and shows how Chronicles preserves additional historical details, including details not given in Kings. It identifies Lahmi as the brother of Goliath the Gittite. Together with Sippai in verse 4 and the man with six fingers and six toes in verse 6, he was one of Goliath's brothers, born to the giant in Gath, who fell by the hand of David and his servants.