There is no scriptural defense for such an unbiblical manmade tradition, that didn't exist until 1,500 years after Jesus Christ founded His Church. Jesus Christ founded one Church, said it was to remain one, and promised that one Church the fullness of God's truth. It is because of that promise that the book compiled by that one Church can be considered the Word of God. When Martin Luther defected from the one Church Jesus Christ founded, he had to have something to claim as an authority, so He chose a book of Catholic writings compiled by the bishops of the Catholic Church at the direction of the Pope. He claimed that because that book is the Word of God, it alone could be the source of truth. What he overlooked is the obvious fact that anything we read has to be interpreted correctly in order to provide truth. Before he died, there were 7 other Protestant churches, founded by people who had broken away from his church because they disagreed with his interpretations of the Bible. The doctrinal chaos of Protestantism had begun. Today, 500 years later, there are more than 6,000 registered Protestant denominations, plus 20,000 so-called "non-denominational" Protestant churches, each claiming to be teaching the truth because what they teach comes from "the Bible alone", yet the teaching of each one contradicting the teaching of the others. Truth cannot contradict truth, so there is obviously a tremendous amount of untruth being taught by such churches. In the meantime, the ONE Church founded by Jesus Christ remains ONE in belief, ONE in teaching, ONE in worship, ONE in biblical understanding throughout the world after 2,000 years, with NO conflicting denominations. You just can't beat God's plan.