Have you studied at a seminary? Do you have any qualifications from an accredited seminary?
“I would not believe in the Gospel myself if the authority of the Catholic Church did not influence me to do so.” St. Augustine
Against the letter of Mani, 5,6, 397 A.D.
There you have it from one of the greatest ever theologians (perhaps second only to St. Aquinas) whose books are studied in leading seminaries, universities, and theology faculties around the world.