We should probably read these verses in conjunction and contrast with verses 8- 9. Nephi uses the Isaiahnic image of the final battle of the Messiah as a model for his typological description of the coming of the Messiah to the New World. His verbal characterizations of that event are much closer to an apocalyptic prediction than would be warranted by any of the events in the life of Jesus in the Old World.
When Lehi’s family leaves Jerusalem, Nephi casts their own exodus into the typological patterns of the Exodus Likewise here, Nephi casts events from one coming of the Messiah into the typology of the triumphal coming of the Messiah.
Nephi saw his people as intimately involved in the prophecies of Isaiah, and that his casting of this event in apocalyptic terms assures us that Nephi sees this appearance of the Messiah as one fulfillment of Isaiah’s prophecy.