The number of the disciples multiplied greatly in Jerusalem, and a great many of the priests were obedient to the faith
Acts 6, 1-6
Among the religious authorities in Jerusalem, not only were the Pharisee Nicodemus and the prominent. Joseph of Arinethea both secret disciples of Jesus, but there was also long-standing discension about him, so much that St John says of these authorities on the very eve of Christ's Passion, "many believed in him," though very imperfectly. This is not surprising, if one recalls that on the day after Pentecost "a great many of the priests were obedient to the faith"