16:18-19 the rock is referring to Peter. For Tertullian Peter is the type of the one Church and its origins, this Church, is now present in a variety of local churches. Tertullian also believed that the power to "bind and unbind" has passed from Peter to the apostles and prophets of the Montanist church, not the bishops. Tertullian mocked Pope Calixtus or Agrippinus (it is debated which one he was referring to) when he challenged him on the Church forgiving capital sinners and letting them back into the church. Tertullian believed that the people who committed grave sins, such as sorcery, fornication and murder should not be let inside the church. As a Montanist, Tertullian attacked the church authorities as more interested in their own political power in the church than in listening to the Spirit. Tertullian's criticism of Church authorities has been compared to the Protestant reformation. Marriage Tertullian's view of marriage was heavily influenced by Montanism; in Tertullian's book Exhortation to Chastity, it can be seen that Terullian had a huge shift in his views on marriage after becoming a Montanist. He had previously held marriage to be fundamentally good, but after his conversion he denied its goodness. Tertullian argues that marriage is considered to be good "when it's compared with the greatest of all evils". Tertullian argued that before the coming of Christ, the command to reproduce was a prophetic sign pointing to the coming of the Church; after it came, the command was superseded. Tertullian also believed lust for one's wife and for another woman were essentially the same, so that marital desire was similar to adulterous desire. Tertullian believed that sex even in marriage would disrupt the Christian life and that abstinence was the best way to achieve the clarity of the soul. Tertullian's views would later influence much of the western church. Tertullian was the first to introduce a view of "sexual hierarchy": he believed that those who abstain from sexual relations should have a higher hierarchy in the church than those who do not, because he saw sexual relations as a barrier that stopped one from a close relationship with God. Scripture Tertullian did not have a specific listing of the canon; however, he quotes 1 John, 1 Peter, Jude, Revelation, the Pauline epistles and the four Gospels. After Tertullian's conversion to Montanism, he also started to use the Shepherd of Hermas. Tertullian