In the Bible who besides David killed a giant?

According to 1 Samuel 17, David Slew Goliath.

According to 2 Samuel 21:19 it was Elhanan (not David) who slew Goliath. The editors of the King James Version added the Words "the brother of" to avoid the obvious contradiction. This is shown by the italics in the KJV. see link "sample Chapter:96. David killed Goliath. 2 Samuel 21:19[8] tells how Goliath the Gittite's brother was killed by "Elhanan the son of Jaare-oregim, the Bethlehemite." The name of Goliath's brother is not given until 1 Chronicles 20,[9] by saying that Elhanan "slew Lahmi the brother of Goliath," apparently constructing the name Lahmi from the last portion of the Word "Bethlehemite" ("beit-ha'lahmi").[10] The King James Bible translators adopted this into their translation of 2 Samuel 21:18-19, although the Hebrew text makes no mention of the Word "brother". 2 Samuel 21 appears to be an extremely corrupt passage: "Jaare-oregim," the name of Elhanan's father, means a nonsensical "forest of weaver's beams", and seems to have been copied from Goliath's weaponry (Goliath has a spear "with a shaft like a weaver's beam"). Dr. Baruch Halpern believes that David's opponent probably had no name originally, being referred to simply as "the Philistine" (the name Goliath is applied to him only twice in 1 Samuel 17): "Most likely, storytellers displaced the deed from the otherwise obscure Elhanan onto the more famous character, David."[11] . see link Goliath Wikipedia

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