The Catholic Church bases her teaching upon one source: The word of God. This divine revelation is transmitted in two ways: through Scripture and apostolic tradition. Many assume that only the writings of the apostles are the word of God. However, their oral transmission of the faith is also considered the word of God (1 Thess. 2:13). Few Protestant groups today accept the validity, let alone the authority, of tradition. In fact, many believe that Scripture is the only definitive source of divine truth.
"I have been listening to you on EWTN for about one year now. I left the Catholic Church 42 years ago and have been attending Protestant churches. After many struggles during this last year, I finally went to confession on Sunday. Thank you all so much for helping me on my journey home.”
"In order to restore in the world the reign of Jesus Christ, nothing is as necessary as the holiness of the clergy."