Why would we want to do that?
Ask us and we’ll tell you we don’t believe in it, ask us why and we’ll tell you why we don’t believe in it but most of us don’t really care whether you believe in it or not.
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Exactly one of the points I was attempting to make in other posts. Judaism can’t lead you to the Christian Christ, but it can lead you to the God of Jesus and other New Testament and early Christian figures.
The earliest “Christianity” WAS a form of Judaism - an odd, sectarian, out-of-the-mainstream sort of Judaism, but still Judaism. The righteous Jewish prophet Jesus (as attested in Peter’s earliest sermons in Acts) was raised up by the Jewish God and enthroned in heaven like the Standing Son of Man in the Jewish books of Daniel, Isaiah, and Ezekiel. He said his mission was only to Israel, who were to have the children’s food rather than the scraps from the householder’s table. Even Paul had to remind haughty Gentile converts that they were being grafted, in these latter days, to the vine of Israel. And the first persecutions of “the church” were not by Jews against Christians, but rather by mainstream Jewish authorities against an upstart
Jewish sect that acknowledged a martyred prophet as Messiah and risen/exalted “Son”.
Some modern Jews - but certainly not the so-called “Messianic” Jews - are trying to carry on the original pre-Pauline Jewish-sectarian understanding of Jesus, under a general umbrella of “Ebionites”, “Nazoreans”, etc. But other than this minority movement, mainline Judaism will not and cannot lead anyone to Jesus, for the simple reasons 1) that most Christian claims about Jesus are unaccepted and unacceptable to Jews, and 2) Judaism has flourished to the present day without worshiping Jesus or being “Christian” in any other meaningful way.
But being neither able or willing to to lead people to Jesus is not the same thing as wanting to lead people away from him. A Christian converting to Judaism will not find a replacement for Jesus, or “Satan”, but only an absence - an absence of a* Christian* “Lord and Savior” who is irrelevant to Judaism. Instead, the Christian convert will find many of the basics that Jesus and his Jewish disciples knew and practiced, as redifined by the rabbis and others after the fall of Jerusalem.
Most practicing Jews do not want to lead Christians away from Christ. They would like to see Judaism flourish by observing Torah and showing love of their God by fulfilling his commandments. If Gentiles want to convert, fine. If not, fine - Gentiles always, already, have their own Yahwistic covenant, which was struck with Noah - and which James recommended for Gentiles converts as long ago as the first council in Jerusalem, as noted in the book of Acts.