The apostles entrusted the duty of continuing their work to their successors
1. Apostles asked their successors to be the shepherds of the Church (cf. Acts 20:28)
2. Apostles ensured that other worthy men would take over their ministry before they expired
3. Jesus promised to remain with them until the end of time (cf Mt. 28:20)
4. The sacred order of bishops took over, continuing to shepherd the Church established by Christ