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.
Davidiad
In Book IV, the Philistines attack the city of Keilah, and David repels their assault; however, when David discerns in prayer that the inhabitants of the city would turn him over to Saul, he flees into the Wilderness of Ziph. In time, the Ziphites approach Saul and promise to turn David over to him, but David escapes to the Wilderness of Maon. Saul initially gives chase, but his attention is diverted by a renewed Philistine invasion and David is able to secure some respite in a cave at Ein Gedi. After following the Philistines, Saul coincidentally journeys into the same cave. Given a chance to kill the king, David refuses; instead he secretly cuts off a corner of Saul's robe, and when Saul leaves the cave, he comes out to pay homage to Saul as the king and to demonstrate, using the piece of robe, that he holds no malice towards Saul. Moved by David's righteous, Saul and David are reconciled for the first time, and the former recognizes that the latter will indeed be the future king. Then, it is announced that Samuel has died. Afterwards, David journeys to the Desert of Paran, where he seeks provisions from Nabal, a rich man in the region. Nabal insults David, but Nabal's wife, Abigail, intervenes to avert David's wrath.