Acts 23:6 Now when Paul perceived that one part were Sadducees and the other Pharisees, he cried out in the council, “Brothers, I am a Pharisee, a son of Pharisees. It is with respect to the hope and the resurrection of the dead that I am on trial.”Yes they left Judaism and became christian. Real christian, there is only a single religion that has Jesus( 1Cor 1:10) out of the hundreds claiming to be christian.
What is the name of the religion that Pharisees practice?
Acts 24:14 But this I confess to you, that according to the Way, which they call a sect, I worship the God of our fathers, believing everything laid down by the Law and written in the Prophets,
What is the name of the religion of which The Way is a sect?