Theophylact of Ohrid

Otherwise, he who gained the whole world but lost his soul would give it all away when he is burning in the flames, and would thus ransom himself. But such a ransom is impossible there. Here the mouths of those who, following Origen, say that the condition of souls will change for the better after they have been punished in proportion to their sins are also stopped. Let them hear that there it is in no way possible to give a ransom for the soul, and to suffer only to the degree supposedly needed to make satisfaction for sins.

Commentary on Mark ↗