The type of heretic that goes to hell, was never saved.
But a sheep lacking knowledge who has a genuine faith in Jesus as his Savior goes to heaven if they are born again and adopted.
One wheat and one tare may hold the same error.... the wheat has been made new born again and is lacking in spiritual wisdom (obviously not called to be a teacher in this state) .... the other is a wolf being used by satan pushing heresy.... (being used by satan to teach garbage)
141. hairetikos ►
Strong's Concordance
hairetikos: causing division
Original Word: αἱρετικός, ή, όν
Part of Speech: Adjective
Transliteration: hairetikos
Phonetic Spelling: (hahee-ret-ee-kos')
Definition: causing division
Usage: disposed to form sects, sectarian, heretical, factious.
139. hairesis ►
Strong's Concordance
hairesis: choice, opinion
Original Word: αἵρεσις, εως, ἡ
Part of Speech: Noun, Feminine
Transliteration: hairesis
Phonetic Spelling: (hah'-ee-res-is)
Definition: choice, opinion
Usage: a self-chosen opinion, a religious or philosophical sect, discord or contention.
(though I think it is safe to say, many specific forms of heresy would prove no genuine faith.... if we aren't trusting in Jesus Christ as our Lord and savior and born again and covered by His blood..... no justification)
(also you said "This is just my opinion; I do not believe God will allow a heretic into heaven." )
hairesis ►
Strong's Concordance
hairesis: choice, opinion
Original Word: αἵρεσις, εως, ἡ
Part of Speech: Noun, Feminine
Transliteration: hairesis
Phonetic Spelling: (hah'-ee-res-is)
Definition: choice, opinion
Usage: a self-chosen opinion, a religious or philosophical sect, discord or contention.