Jewish Jesus Said Preach to the Jew First Then to the Gentile so Why the Confusion Over Israeli Messiah?

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When Jesus resurrected and His Spirit body was seen by dozens of people in Jerusalem, of course those Jews were the first to announce that He indeed is the risen Messiah long prophesied, and of course they began preaching to their jewish brethren, so isn’t it amazing that even some Christians teach that Jews don’t need Jesus, that they will have their own Messiah, meaning those so-called Christians want the Jews to accept the treacherous Antichrist soon coming?