1. Clear hierarchy with apostles and disciples. Peter established as leader. Peter is first pope. He is simply in persona Christi. Your fixated on the Roman thing? Peter was martyred there. But as a Catholic. Roman is simply a rite or expression. 2. Revelation ended with the last apostle’s death. Yet it wasn’t all written down in the bible. The church lives in time. There’s a development of understanding of revelation and Gods word. Which ultimately was made flesh. Scripture and tradition. Not bible alone. Never been bible alone. Bible was put together/ agreed to with the guidance of thhe Holy Spirit in the e 4th century. Again most humans also couldn’t read and no printing press - yet bible alone was necessary???