Novatianism

noun1

1. •
   (historical) A rigorist Christian sect that opposed re-admitting baptised Christians who had previously renounced their faith under persecution and by extension all those who had committed a mortal sin, founded by the priest and antipope Novatian in the third century.

   • Novatianism still retained a measure of the Divine Spirit , and was honoured with furnishing those who suffered for Jesus — 1794