All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work. 2 Timothy 3:16-17
Just before Jesus returned to Heaven, He commanded His apostles to “Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son, and of the Holy Spirit, teaching them to observe all things that I have commanded you; and lo, I am with you always, even to the end of the age” (Matthew 28:19-20). The belief or creed of the church of Christ is based upon the great truth that “Jesus is the Christ, the Son of the living God” (Matthew 16:16).
Apostles and evangelists of the first century, under the direction of the Holy Spirit, wrote down the teachings of Jesus. This we have in the New Testament. We have no other law, guide, or standard of authority. This is truly a creed that needs no revision. It is perfectly suited to the changing conditions of man in all countries, cultures, and climates of the world in all the centuries until Jesus comes again.