People left a cult that does not follow the Bible.
Cult? You may be interested in what the non-Catholic Christian Research Institute has to say about that.
Is Catholicism a Cult? - Christian Research Institute
From your link:
(2) Cults are usually formed, molded, and controlled by a single individual or small group.
Rome
3) Cults typically exercise rigid control over their members and demand unquestioning submission, with disobedience punished by shunning and/or excommunication.
Excommunication and labeling everyone else as inferior.
(4) An appropriate description of a cult is “a religious group originating as a heretical sect and maintaining fervent commitment to heresy.
NonBiblical teachings and practices.
(5) Cults (when defined as heretical sects) are classified as such because of their outright denial or rejection of essential Christian doctrine.
See my post on Mary worship, saints of inanimate objects, appointment of saints, etc etc.
(6) Cults frequently have a low view of the Bible, replacing or supplementing it with their own so-called “sacred writings.”
Walk into any Catholic Church. No Bibles in the open. Manmade teachings and practices.
(7) Cults usually have some kind of authoritarian, totalistic leader or prophet.
Pope.
(8) A frequent characteristic of cults is their emphasis on a “remnant identity” — that is, they claim to be God’s exclusive agent or people who restore “authentic Christianity,” which has been corrupted or lost.
Pope and insisting everyone else is wrong.