2 Samuel 21:19

And there was again a battle in Gob with the Philistines, where Elhanan the son of Jaare–oregim, a Beth–lehemite, slew the brother of Goliath the Gittite, the staff of whose spear was like a weaver’s beam.

Cross-reference

1 Samuel 17:4-11 records David killing Goliath, creating a contradiction with this verse's claim that Elhanan killed him.

1 Chronicles 20:5 resolves the discrepancy: Elhanan killed Lahmi, Goliath's brother, not Goliath himself, harmonizing with David's victory.

1 Samuel 17:7 uses the exact same phrase 'like a weaver's beam' to describe Goliath's spear, linking the two giants.