Heresy is any belief or theory that is strongly at variance with established beliefs
or customs. ..... used as an ideological pigeonhole for contemporary writers
a belief or opinion that does not agree with the official belief or opinion of a
particular religion. Source: Merriam-Webster's Learner's
So, what exactly is heresy, and what does the Bible have to say about it? A basic
Heresy Definition and meaning from Bible
No, the word we are using is
The word "
a. An opinion or a doctrine at variance with established religious beliefs, especially dissension from or denial of Roman Catholic dogma by a professed believer ...