The Catholic Church is the oldest establishment on earth. It was the only church in existence until the year 1054 when the Orthodox Church broke away— but orthodox retained the same teachings minus the authority of the the church in Rome and the pope through apostolic succession.
We have over 27 massive volumes of apostolic texts showing concurrence with the teaching of the Catholic Church. The Church hasn’t switched positions of literal vs interpretative bible text versus ever. (Both catholic and orthodox churches are teaching correctly as handed down through apostolic revelation, minus of course for orthodox: the acceptance of the authority of the Roman Catholic Church as it was handed to Simon Peter (1st pope of Roman Catholic Church) by Jesus by giving him ‘the keys to the kingdom of heaven’ and advising what he binds on earth is bound in heaven— and what he looses on earth is loosed in heaven.
It wasn’t until the 16th century that Martin Luther protested the church and with the newly invented printing press was able to spread his own word and create his own sect. Even Martian Luther, the head of the protesting (Protestant) revolution believed in the true presence of Christ in the Eucharist. All these new interpretations present throughout the Protestant faiths have all been created within the recent past several hundred years. They might be easier to swallow than the truth and Jesus tells us not everyone can accept the truth. (John 6:52-62)
So there was no Christian church/ religion except for the Catholic Church and those exact teachings for the greater part of history. The gospel with the words of Jesus always speak to ‘his church,’ never mentioning anything along the lines of ‘his holy book’ but always referencing his church. Yet Protestants insist their full faith should come from their feelings and Interpretations of scripture previously provided by the Roman Catholic Church. It’s complete hypocrisy by Protestants (those who protest) really. Jesus warns us that many will come in his name and deceive many but the kingdom of hell will not prevail against his church (the teachings of the Roman Catholic Church will remain true, pure and fruitful). Paul says: “For I know this, that After my departure savage wolves will come in among you, not sparing the flock. Also from among yourselves men will rise up, speaking perverse things, to draw away the disciples after themselves” (2 Timothy 3:13) Jesus advises Not everyone who says to me, ‘Lord, Lord’ shall enter the kingdom of heaven, but he who does the will of my father in heaven” (Acts 20:29-30). Protestant teaches saved by faith alone. Catholic teaches through faith and works… Catholic teachings we can identify through its fruit: (WAKE UP and smell the TRUTH!) The ongoing aparations from god and the mother of the church (Jesus on the cross says of Mary ‘This is your mother’). I.e Our lady of Guadalupe, Lourdes and Fatima. All modern day miracles to identify fruit and favor of God. All with physical evidence and/or thousands of eye witnesses. Why don’t these other Christian churches receive Miracles from God?