Top best answers to the question «What's the difference between heresy and blasphemy»
In Christianity, blasphemy has points in common with heresy but is differentiated from it in that heresy consists of holding a belief contrary to the orthodox one… In the Christian religion, blasphemy has been regarded as a sin by moral theologians; St. Thomas Aquinas described it as a sin against faith.
Originally Answered: What is the difference between Heresy & Blasphemy? Blasphemy is irreverence, insult or rudeness towards God. Heresy is wrong belief in God, or any idea that is strongly against the standard beliefs in God in a particular area.