2 Nephi 19

[pam]

Messianic Prophecies
Chapters 9 and 10 of Isaiah are a natural continuation of chapters 7 and 8; the historical context still centers upon the Assyrian crisis of 734-701 B.C., although the situation worsens after Ahaz ignores Isaiah’s counsel. In chapters 7 and 8, Isaiah told Ahaz that an Assyrian alliance would bring problems. Now, in chapters 9 and 10, with the alliance an accomplished fact, Isaiah prophesies more specifically about the Assyrian punishments coming upon Israel and Judah. He warns the ten tribes in the north of their impending captivity and foretells a later Assyrian attack upon the southern tribes.
The messianic prophecies of chapters 7 and 8 are also developed further in chapters 9 and 10. The Immanuel prophecy is amplified in chapter 9 as Isaiah promises a “new light” and a new leader for Israel. This promised child could be the young King Hezekiah, who would help deliver Judah from the Assyrians, but if Hezekiah is the object of Isaiah’s prophecy, he is only a foreshadowing of Jesus Christ, the greater light and deliverer of all nations.
Victor L. Ludlow, Isaiah: Prophet, Seer, and Poet [salt Lake City: Deseret Book Co., 1982], 151

2 Nephi 17-19 all contain prophecies of a son being born. Some scholars believe these chapters relate to each other like this:
2 Nephi 17 The Immanuel prophecy
2 Nephi 18 The first fulfillment (Maher-shalal-has-baz)
2 Nephi 19 The later fulfillment (Jesus Christ)
Adapted from Parry, Understanding Isaiah, 93