Well, by nature, no human institution functions as gatekeeper between me and God, and Orthodoxy/Catholicism absolutely aims to do that. By study, you find out that the early Church debated quite a bit about topics such as which scriptures “counted,” and a lot of them were excluded or edited heavily in an effort to reconstruct them from bits and pieces of different manuscripts. By thought, certain ideas like the Trinity are nonsensical, and God wouldn’t expect us to forsake logos as an article of faith, that’s something a demon would come up with.