dogma
noun
°An authoritative principle, belief or statement of opinion, especially one considered to be absolutely true regardless of evidence, or without evidence to support it.
"''The unforgiving dogma of Stalinism is that what the party leader, however cruel and incompetent, decrees, however absurd, must be accepted as dogma"
°A doctrine (or set of doctrines) relating to matters such as morality and faith, set forth authoritatively by a religious organization or leader.
"In the Catholic Church, new dogmas can only be declared by the pope after the extremely rare procedure ex cathedra to make them part of the official faith."