I am not a chr*stian and I do not accept "Jews for J*sus" as orthodox Jews. I merely point out that being born of a Jewish mother makes one a Jew according to Halakhah, and to make apostasy to chr*stianity the one and only occasion when a Jew is "declassified" is not only hypocritical but feeds anti-Semitic stereotypes about "Jews not caring what you believe so long as you are not a chr*stian."
I am afraid that Jews will never understand why Fundamentalist chr*stians cannot see the parallel between Jews for J*sus and chr*stians for Mohammed. The Fundamentalist Protestant notion of Judaism and chr*stianity being in fact a single religion (with chr*stians as "completed Jews," G-d forbid) stems from the Protestant Bible. Because the only thing that separates the TaNa"KH from the "new testament" is the turn of a few pages, because the Bible has no commentary printed with it to explain anything, because this is the only bible the Fundamentalist Protestant has ever known, he simply cannot fathom the idea that the "new testament" doesn't really belong. He deals with the contradictions between "the two testaments" with the same attitude that devout Jews have with regard to "contradictions" between the Sages: 'Ellue va'ellu divrei-'Eloqim Chayyim. Chr*stians are "completed Jews" because they have the "completed Bible." "Why did you people tear the "new testament" out, anyway?" [/sarcasm]
Fundamentalist Protestants do not understand the comparsion with moslems being "completed chr*stians" because Mohammed didn't tack the koran onto the chr*stian bible to "complete it." If he had, all these "Bible-believing chr*stians" might be "bible-believing moslems" today.
BTW, there are many holes in your comparison to Mohammed. Jesus fulfilled many OT prophesies. Not so with Mohammed.
I've been surprised to learn that many Jews think many Christians will go to heaven based on their keeping of God's law. How can they think we keep God's law when we worship Jesus as God's Son? It's nice, but I would think no less of them if they thought I was headed for hell. They can't send me there. I'm comfortable with my own beliefs. Let each person be true to his own faith. As for evangelism, the freedom to persuade without the power to force is all anyone needs. That gives false teachers and preachers and prophets just as many rights as true ones. So be it. We will all answer to our Maker in the end.