Acts 5:17

17Then the high priest and all those who were with him, that is, the heretical sect of the Sadducees, rose up and were filled with jealousy.
5:17Notice that the Pharisees have now lost power, and the Sadducees are the ones who are associated with the high priest and are influential with him. The Sadducees were heretical because they did not believe in Angels, nor in fallen angels, nor in the Resurrection. The Pharisees probably lost power due to their actions against Jesus, whereby they pressured Pilate to allow him to be put to death, even though he was innocent.(Conte)
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