From one of the old guys:
Scripture is sufficient and the nature of the NT dispensation logically brings with it and demands this sufficiency of Holy Scripture. Christ has fully–personally and orally, or by his Spirit–revealed everything to the apostles. Upon this word we believe in Christ and have fellowship with God (John 17:20; 1 John 1:3). The Holy Spirit no longer reveals any new doctrines but takes everything from Christ (John 16:14). In Christ God’s revelation has been completed. In the same way the message of salvation is completely contained in Scripture. It constitutes a single whole; it itself conveys the impression of an organism that has reached its full growth. It ends where it begins. It is a circle that returns into itself. It begins with the creation of heaven and earth and ends with the recreation of heaven and earth.