While I'm always delighted to hear that there are some Jews who don't think that Jesus/Yeshua is boiling in excrement in the lower reaches of Sheol (you might want to take that up with your non-Messianic Jewish friends and the Babylonian Talmud, which is far more popular amongst today's Jews than your position), I think I'm going to have to point out some inconvenient things to you.
1. The Emperor Constantine nonsense you are yammering about is bunk, there is a rather gifted apologist with some Jewish ancestry named J.P. Holding who did a nice witty little cartoon that can be seen at http://www.youtube.com/watch?v=s7tQk72ahCQ, and it has books penned by scholars to back it up. If you don't like Western Christianity as it stands after the Council of Nicea, you should take it up with Augustine of Hippo, Ambrose and Athanasius, they were the principle figures driving what I'm arguing.
2. The persecution of Christ's disciples by Nero and others was aided and abetted by Pharisee collaborators. Most of the copies of the Gospels and Epistles that were in circulation needed to be confirmed as such by someone fluent in Hebrew/Aramaic, which most Roman centurions were not. I don't discount that Jesus, his disciples, and even many members of his church today are Jews, but I do discount the notion that Jews are saved by keeping the defunct Old Testament ceremonial laws, getting circumcised and making ineffectual pilgrimages to Israel. Roman Catholicism has more common ground with antiquated Hebrew worship practices and Holy Day keeping than it does with what I advocate.
3. When people in today's political climate refer to Jesus as being a Jew, it is almost always in conjunction with a false argument that Jews can court God's favor without accepting the Gospel message. If you are observing the Old Testament Sabbath and requiring Ceremonial Practices that were abrogated in the New Testament so that the Gentiles could be grafted into Christ's Church, you are essentially a Judaizer and also in violation of the 4th Commandment under the NT dispensation. If you want to argue that the Judaizers were correct, take it up with Saul/Paul in his Epistle to the Galatians.
“My attitude toward progress has passed from antagonism to boredom. I have long ceased to argue with people who prefer Thursday to Wednesday because it is Thursday.” - G.K. Chesterton
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