How do we know apostles are no longer needed in the church?

The necessity for apostles has ceased because the complete canon of Scripture has been given. The ministry of the apostles was foundational, as stated in Ephesians 2:20, where the church is built on the foundation of the apostles and prophets, with Christ as the cornerstone. Once the New Testament was completed, the unique roles and extraordinary gifts given to the apostles were no longer required. The continuing ministry of the church is now overseen by pastor-teachers, who recognize and apply the teachings of Scripture without claiming apostolic authority.