Shared ground
This verse presents a brief battle report: conflict with the Philistines flares up again, and one named Israelite warrior is highlighted for a decisive kill (1 Chronicles 20:5). The writer identifies the hero by family line (“son of Jair”) and identifies the fallen opponent by connections (“brother of Goliath,” “the Gittite,” linked with Gath).
The spear description (“shaft like a weaver’s beam”) functions as a concrete way to underline how intimidating and heavily armed this opponent was. The point is not tactics or speech, but the pattern: recurring war, named champions, and a notable victory.
Where interpretation differs
A real question is how this statement relates to a parallel report about Elhanan in 2 Samuel 21:19. Some readers conclude that both passages are describing the same event, but with a difference in wording: Chronicles specifies that Elhanan killed Lahmi, Goliath’s brother, while Samuel can be read as saying Elhanan killed Goliath.
Others think the simplest reading is that there were two different killings: David killed Goliath earlier, and later Elhanan killed Goliath’s brother; in that view, Chronicles preserves the more explicit identification, while Samuel’s wording reflects a copying or wording problem.
Why the disagreement exists
The disagreement exists because the two texts are very close in phrasing, include the same unusual spear comparison, and yet differ in who exactly is said to be killed. That creates a tension: either the accounts must be harmonized (by explaining the wording difference) or separated (as different events with similar details). The verse itself does not explain the relationship, so interpreters have to weigh how to relate the two reports.
What this passage clearly contributes
Explicitly, the verse contributes these claims: renewed Philistine conflict; Elhanan (son of Jair) kills Lahmi; Lahmi is called Goliath’s brother and a Gittite; and Lahmi’s spear is described as exceptionally large (like a weaver’s beam). Theologically by inference (not stated as a rule), the verse supports a broader portrait in Chronicles of repeated threats being met by capable figures within David’s forces, with attention to named individuals and to the seriousness of the enemies they faced.
2 Samuel 21:19