The importance of studying/knowing the Doctrines and Dogmas of our faith is that they are bound to reflect the interplay of faith and reason in religious experience and to imply some notion of levels and stages in the progress of believers as they move from the threshold of faith toward its fulfillment.
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Doctrine is a belief, or set of beliefs, held by an organization about the best (or right) way to do things. While dogma is to divine revelation and to the authoritative teaching of the Church.
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