Israel Shamir writes:
it is a common error to think that Judaism of our contemporaries is the Judaism of the days of Jesus.
The brilliant Israeli scholar, Prof. Israel Jacob Yuval of Hebrew University in his book, Two Nations in Your Womb[i], proved that Judaism we know of (Rabbinic Judaism) came to existence in the end of the first century after Christ. It came out of ruins of the old Temple-centered Biblical Judaism, practically at the same time as Christianity. It is a full answer to the notion of ‘superseding faith’. Christianity actually superseded Biblical Judaism and became the faith of millions. Still, a small band of men challenged its advent, and offered an alternative, Rabbinic Judaism. In the eyes of its followers, Rabbinic Judaism superseded Biblical Judaism.
Rabbinic Judaism has very little in common with Biblical Judaism. It produced its own holy books, the Mishna and Talmud, as Christianity produced the New Testament. Prof. Yuval wrote: The Biblical Judaism died, and two religions claimed to be the legitimate heir, Christianity and Rabbinic Judaism.
Thus, Judaism we know of is a jealous sister, not a mother faith to Christianity. Its adepts are not the people who remained faithful to the ‘old religion’, as the Biblical Judaism with its sacrifices, Jerusalem Temple, ritual purity, tithes and priests disappeared two thousand years ago.