One comforting factor may be a recognition that some
of the basic teachings of Christianity and some of the traditionally
accepted events of Jesus' life may actually be over 4,500 years old,
grounded in the pre-history of humanity. Another is that, when we strip
away the miraculous and supernatural legends in the gospels which came
from Pagan sources, we are left with the natural. What remains is a story
of an itinerant Jewish teacher who followed the teachings of the 1st Century BCE Jewish philosopher: Hillel.
We have a Jewish Rabbi who taught through parables and by example. These are the core teachings of Jesus which emerge from the gospels -- undiluted by Pagan material.
if you include Shia Muslims differences become even more trivial… for example the seafood law is exactly similar to the Jewish one. the same can be said about the obligatory charity’s amount (20%), the post-divorce payment, the 7 and 40 day mourning periods, the purification process (most of the differences are not obligatory including the Niyya which, although required, is simply confined to the simple intention for doing the action -literally its meaning in Arabic), the coming of age (13/14 or puberty whichever comes earlier), purification for laughing during the prayer (not required), and purification by immersion (a preferred alternative to the sequential method).