The prophet Jacob testifies of Jesus Christ:
Wherefore, as I said unto you, it must needs be expedient that Christ—for in the last night the angel spake unto me that this should be his name—should come among the Jews, among those who are the more wicked part of the world; and they shall crucify him—for thus it behooveth our God, and there is none other nation on earth that would crucify their God. (2 Nephi 10:3)
2 Nephi 10 and the revelation of the name of “Christ”
One of the most significant aspects of Jacob’s discourse is that for the first time in the Book of Mormon the title of Christ is used. A careful study of the Book of Mormon chapters before 2 Nephi 10 reveals that Lehi, Nephi, and Jacob use many terms, including Lord, God, and frequently “the Holy One of Israel,” to refer to Jesus Christ. However, in Jacob’s concluding discourse he tells the people through revelation from an angel that God’s anointed would be known as Christ. From this point forward in the Book of Mormon the name/title Christ is used liberally, over three-hundred times in fact. Incidentally, the name Jesus is not revealed in the Book of Mormon until 2 Nephi 25, this time to Jacob’s older brother Nephi. (2 Nephi 6-10. Jacob’s Masterful Discourse
Taylor Halverson)