Brett Stevens: The question then becomes whether the Bible is the cause of that unity, or merely a common conduit that unites the other necessary parts.
Avraham Rosenblum says:
[Just for the record, I am not against the New Testament. I think rather that Christians have misinterpreted Jesus. That is they go with Paul instead of with Peter and James as you can see in the Recognitions of Clement, the first pope of Rome. Furthermore, I see Jesus in a positive sense. This positive sense is not hard to define for myself because I learned the books of Reb Nachman from Uman, so I have a idea of what a "tzadik" (Jewish saint) means. But that concept can be hard to explain without that background. In short, let me try to explain. It means a person that is in connection with some Divine trait in the world of Emanation. Thus, that person brings a certain kind of light or revelation into the world. Thus, I see Jesus as being a kind of Jewish Tzadik along the lines of Shimon Ben Yochai, Chanina Ben Dosa, or the Gra.
Appendix: (1) I am aware that the Recognitions of Clement has a good deal of debate on it. But I am basing my opinions about this on much more. In my opinion you can see this in the NT itself.
(2) You can nowadays check up the opinion of Rav Abulafia since in the meantime someone made a printed edition of all of his works. You could also simply get the first book of Professor Moshe Idel at Hebrew University which was in fact his Ph.D thesis.
(4) For what I mean by Emanation: the idea is based on the Ari Isaac Luria, but it is rather simple. It means a higher world (or pipeline) of God's holiness. One should not worship any tzadik, however belief in a tzadik brings a kind of blessing or flux into oneself. It is the same kind of thing that we believe in the prophecy of Moses or Samuel, but we do not worship them.