Fourth-century Christian theologian and Bishop Diodorus of Tarsus wrote: "For the wicked there are punishments, not perpetual, however, lest the immortality prepared for them should be a disadvantage, but they are to be purified for a brief period according to the amount of malice in their works. They shall therefore suffer punishment for a short space, but immortal blessedness having no end awaits them… the penalties to be inflicted for their many and grave sins are very far surpassed by the magnitude of the mercy to be shown to them."[14]