Explaining to a Muslim Why I Believe That The Bible Is True By Sacrificing The Catholic Church

This Muslim did not want to be on the camera, so only the audio is present.
This is a conversation that I had with a Muslim where he asked me why I believe in the Bible. I can probably understand why he asked this question, because the more famous Christians at the park like to attack Islam, while also avoiding defending the Bible, so it was good for him to have a chance to finally ask the question to someone.
Some people might be unhappy about me using the Catholic church as the bad guys to validate the survival of the Bible, but they have benefited so much from their association with the Bible, even though they killed people who disagreed with their idolatry, so it is about time they were of some use in helping the true believers.