What I found interesting are the following books
1. the day christ died - by Jim Bishop
2. first century Judaism in crisis - Neusner
3. Christ or Allah - Nabeel Qureishi
The historical background that there were 5 sects of Judaism in 30 AD to 69 AD is fascinating:
1. the Sadduccees - they held to the written Torah and the prophets. Didn’t believe in life after death and were the high priests and elites
2. the Samaritans - descendents of Ephraim and Manasseh, they held only to the Torah, but have(and had) their own Torah which doesn’t have Jerusalem but Mt Gerizim
3. The Pharisees - they held to the written AND the oral Torah
4. the Essenes - vegetarian ascetics
5. the Jesus movement
And the Zealots were a branch of the Pharisees that believed in action now.
Finally with the destruction of the temple in 69 AD after 42 months of war (as seen in the vision of John of Patmos in the book of the Revelation) - the 1260 days you ahve only the Jesus movement and the pharisees surviving because they find different ways of worship without the temple and its sacrifices.
these two were the christian and modern jewish religions.