 Because the books that are inspired in the Bible, which is all of them, they come from God, not from the church, but they come to you through the church. And the church said, the Catholic church said, under the authority of the Pope in 382 to 383, these are the accepted books of the New Testament. No more, no less. These. Another question. How do you even know who wrote the Gospel of Matthew, not to mention Mark, Luke, and John?