What the Catholic Church did was after 1,000 years of accepted inspired works by both the Hebrew and Gentile fathers, they introduced OTHER text that was never accepted as inspired works of God. Not even by their own Church. So Catholics have some explaining to do as to what constitutes "inspired" writings and how the inspire writings of God differs from others.
As far as underestimating God and to what He wants to reveal to who...to be perfectly honest I'm about the very last person on this site you should question about that.
Thank you for your post, Harley. That is EXACTLY what the Catholic Church did. Placed uninspired “scripture” into Scripture and called it ALL Holy Spirit Inspired Scripture. By WHOSE authority did they do this? By their own...”infallible”...”authority”: that’s who. And then issued anathema to anyone who disagreed with them on the subject, the authority, and the meaning of these “scriptures”. Just a joke of a religious system of deceit and denial that the world is supposed to be impressed with and frightened of.