David put his hand in his bag, and took thence a stone, and slang
it, and smote the Philistine in his forehead, that the stone sunk into
his forehead; and he fell upon his face to the earth. David prevailed
over the Philistine with a sling and with a stone, and smote the
Philistine, and slew him; but there was no sword in the hand of
David.
And there was again a battle in Gob with the Philistines, where Elhanan the
son of Jaareoregim, a Bethlehemite, slew the brother of Goliath the Gittite, the staff of whose spear was like a
weaver's beam.
[The words "the brother of" were inserted by the KJV translators to avoid the obvious contradiction with
1 Samuel 17:49-51.]