People who hold religious ideas that oppose accepted church teachings

These people are called heretics.

Explanation:

Heretics are people that hold an religious idea that is opposed to the widely accepted church ideologies and teachings.

The word heretic stems from Greek where it means 'thing chosen'.

Heresy is not apostasy which is abandonment of religion, nor is it blasphemy which is an insult to a particular religion.

It is more a gentle act of violation of certain religious themes and ideas, however, it can also take on a violent form.

In certain religions, heresy is punished with excommunication.

People who hold religious ideas that oppose accepted church teachings. Heretics