Tertullian: Purgatory

“IN short, inasmuch as we understand the prison pointed out in the Gospel to be hades, and as we also interpret the uttermost farthing to mean the very smallest offence which has to be recompensed there before the resurrection, no one will hesitate to believe that the soul undergoes in hades some compensatory discipline, without prejudice to the full process of the resurrection, when the recompense will be administered through the flesh besides.”

~Tertullian of Carthage (c. 160 – c. 225 AD): Treatise on the Soul, 58.

Woodcut depicting Quintus Septimius Florens Tertullianus