Mav accused me of circular reasoning. I was not guilty of that. Circular reasoning concludes an argument by restating the premise instead of deriving the conclusion from the premise. Tautologies state the same thing twice. The logical validities of an argument determine the way the conclusion can logically derive from the premise, without merely restating the premise. I did not merely restate the premise. Nor did I assume the premise as my conclusion. The authority of the Holy Church depends upon the validity of the Holy Scripture and the Holy Tradition in tandem and their authority from God is logically derived from the arguments made at their behest only when taken together. Any conclusion arrived at from the three that assumes agreement from the three is said to carry Holy Authority. Each is not an authority separated from the other.
Now, when I said that God exists. I did make a circular argument.
When I said that His existence is proven logically, I did not. What your post implies is that I am guilty of a rhetorical fallacy. I am not. I made a logical tautology. Which is an axiomatic statement. The premise that the three wield authority because they speak on behalf of God and only when their conclusions are taken together is unfalsifiable from any interpretation except to disregard the statement entirely. Logically, God exists because the Church sought to satisfy the premise of their hypothesis (that God exists) by consulting two separate authorities whose authority was only recognized in tandem with the Church. No one derives authority from the other two.
It may be moderately sacrilegious to suggest that God exists because the three say He does, but for the purposes of argument, it is a statement I will make.