Elhanan, son of Jair
Elhanan son of Jair-Oregim the Bethlehemite ( "’Elḥānān ben-Ya‘rê ’Ōrəḡîm Bêṯhallaḥmî") appears in 2 Samuel 21:19, where he is credited with killing Goliath. As this contradicts the better-known story in 1 Samuel 17 in which it is the famous David who kills Goliath, the 4th century BC Book of Chronicles explains the second Goliath by saying (20:5) that Elhanan "slew Lahmi the brother of Goliath", possibly constructing the name Lahmi from the last portion of the word "Bethlehemite" (""beit-ha’lahmi"). The King James Bible translators modified 2 Samuel 21:18–19 to make it read as if Elhanan had slain Goliath's brother: "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", although the Hebrew text at this point makes no mention of the word "brother"; the medieval Jewish authors of the Targum Jonathan solved the problem by explaining Elhanan as an alternative name for David. However, this makes it difficult to explain why David is called "Elhanan" in verse 19 but consistently "David" in the verses that surround it (15, 16, 17, 21, 22). The most widely accepted explanation is that the storytellers have displaced the deed from the obscure Elhanan to the more famous character, David.
Valley of Elah
The Valley of Elah, Ella Valley, "the valley of the terebinth" ( "Emek HaElah"; , "Wadi es-Sunt"), so called after the large and shady terebinth trees ("Pistacia atlantica") which are indigenous to its parts, and best known as the place described in the Bible where the Israelites were encamped when David fought Goliath (1 Sam. 17:2, 19). It was near Azekah and Socho (17:1). On the west side of the valley, near Socho, there is a very large and ancient tree of this kind, 55 feet in height, its trunk 17 feet in circumference, and the breadth of its shade no less than 75 feet. It marks the upper end of the valley, and forms a noted object, being one of the largest terebinths in the area. Rising up from the valley on its extreme south-east end lies the hilltop ruin, Adullam.