Dr. Donald Stamps once wrote concerning 1 Co. 15:8-11, "Paul's statement 'last of all' must be taken absolutely. Paul was the last of the apostles defined in the sense of receiving a special commission through a personal meeting with the risen Lord in order to participate in forming the original and fundamental testimony of Jesus Christ. Thus the original twelve apostles plus Paul can have no successors. This foundation can never be altered or added to." Yes, its foundational!