1 Nephi 13:42

"42 And the time cometh that he shall manifest himself unto all nations, both unto the Jews and also unto the Gentiles; and after he has manifested himself unto the Jews and also unto the Gentiles, then he shall manifest himself unto the Gentiles and also unto the Jews, and the last shall be first, and the first shall be last."

-- At the meridian of time, Jesus manifested himself unto the world. He did this first unto the Jews during His mortal ministry, His atoning sacrifice, and for several weeks following His resurrection. The Jewish Christians traveled all across the known world and preached the gospel, bringing in converts from among the nations. Christ then traveled to other parts of the world to reveal Himself and declare His gospel message. The Nephites are one group of people that we know He visited, for we have their record of it. He also visited other groups of people on the earth. He declared unto the Nephites, “And verily, verily, I say unto you that I have other sheep, which are not of this land, neither of the land of Jerusalem, neither in any parts of that land round about whither I have been to minister. For they of whom I speak are they who have not as yet heard my voice; neither have I at any time manifested myself unto them. But I have received a commandment of the Father that I shall go unto them, and that they shall hear my voice, and shall be numbered among my sheep, that there may be one fold and one shepherd; therefore I go to show myself unto them.” (3 Ne 16: 1-3). The order of His manifestation was clearly first to the Jews, then to everyone else, who are lumped together as Gentiles. Now, in the fullness of times, Christ has manifested Himself unto the inhabitants of the earth in the opposite order. He first opened the dispensation by appearing to Joseph Smith, Jr., and restoring His gospel through his prophetic call. From that time forward, the gospel has been carried throughout the earth by Gentile (not Jews, though they are of the house of Israel) Christian missionaries. While some Jews have joined the restored church, the majority have not. They continue waiting for the Messiah to come; not knowing that Jesus was the Messiah and has already come. Nevertheless, following the great battle to take place at the end of the world, Christ shall appear unto the Jews in person, save them from destruction, show them the prints of the nails in His hands, feet, and side and shall declare Himself as their Savior. From this final manifestation, the Jews will know and accept Jesus of Nazareth, the same that came in the meridian of time, as their Lord and Savior, the long awaited Messiah. (D&C 45:47-53, Zech 14:1-9).