2 Nephi 25:18

Wherefore, he shall bring forth his words unto them, which words shall judge them at the last day, for they shall be given them for the purpose of convincing them of the true Messiah, who was rejected by them; and unto the convincing of them that they need not look forward any more for a Messiah to come, for there should not any come, save it should be a false Messiah, which should deceive the people: for there is save one Messiah spoken of by the Prophets, and that Messiah is he which should be rejected of the Jews.

So he will bring his words to them. These words will judge them on the last day. These words are given to show them the true Messiah. They rejected him. The words will show them that they don’t need to look for another Messiah to come. No Messiah will come except false ones. False messiahs will trick the people. There is only one Messiah that the prophets spoke about. That Messiah is the one that the Jews rejected.

He’ll bring them his words—words that will judge them in the last day. These words will prove to them that the true Messiah was the one they rejected. They’ll convince them they don’t need to wait for another Messiah, because anyone else who comes will be a fraud trying to deceive people. The prophets spoke of only one Messiah—the one the Jews rejected.