Is the Bible Alone Sufficient for Spiritual Truth? According to Roman Catholicism, Sacred Tradition and the Bible together provide the foundation of spiritual truth. From this combination the Catholic church has produced many doctrines which it says are true and biblical. Protestantism, however, rejects Roman Catholic Sacred Tradition and holds fast to the call "Sola Scriptura," or, "Scripture Alone." Catholics then challenge, "Is Sola Scriptura biblical?" The Bible does not say "Do not use tradition" or "Scripture alone is sufficient." But the Bible does not say "The Trinity is three persons in one God," either, yet it is a fundamental...