Perhaps you're conflating faith with religion.

Faith being "confidence, trust or belief in a thing , person or concept, sometimes in the absence of proof"

Not to be confused with "blind faith" which is the above but with wilful ignorance or dismissal of proof that contradicts the aspect of the faith.

Also not to be confused with "religion" which is the social construct or organisation around a central faith.

You can have faith without religion, but you can't generally have a religion without faith.