Scripture and Tradition are the inspired sources of Christian doctrine, while the Church—a historical and visible entity dating back to St. Peter and the Apostles in an uninterrupted succession—is the infallible teacher and interpreter of Christian doctrine. It is only by accepting this complete Christian rule of faith that followers of Christ can know they are adhering to all the things that He commanded His Apostles to teach (cf. Matt. 28:20). It is only by accepting this complete Christian rule of faith that the followers of Christ are assured of possessing the whole truth which Christ
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