It must be a very powerful delusion, that the Roman Catholic Church was handed down by Jesus Christ. It’s a syncretistic mess of official Roman state paganism overshadowing the trappings of Christianity. There are believing Christians within her, to that I can attest having known a number of them. But the church is a Byzantine house of puzzles hiding a great deal of blasphemy and sin, and always has been.
Saint Matther, Chapter 13:
47 Again, the kingdom of heaven is like to a net cast into the sea, and gathering together of all kind of fishes.
48 Which, when it was filled, they drew out, and sitting by the shore they chose out the good into vessels, but the bad they cast forth.
Is the net in the parable a bad net? No, it is a very good net. But it does not contain all good things until at the end of the pull the fishermen (the angels) separate out the good and keep while the bad are thrown away.
So it is with the Catholic Church (the kingdom of heaven). At the end of time the wicked found in it will be identified and cast into hell.