Questions about the Pharisees

We know about the Pharisees from three major sources, none of them the Old Testament. The Law is not from the Pharisees. The three sources are the NT, mostly the Gospels but some from Paul who was a Pharisee, Josephus, and the Rabbinic texts (Mishnah, Talmuds, Tosefta). The Rabbinical writings are not writing history and there are good reasons not to eq…