How cults brainwash

Step 5: The “sacred science.”

"Totalist systems proclaim their dogma to be the absolute, complete, and eternal truth, which in turn elevates the dogma to a sacred level. Any information that contradicts this absolute truth is therefore false by definition, and its source is misguided at best and an enemy at worst."

https://www.cultnews101.com/1992/12/deprogramming-case-study-part-1.html