I also maintain that those who are punished in Gehenna, are scourged by the scourge of love. Nay, what is so bitter and vehement as the torment of love?…It would be improper for a man to think that sinners in Gehenna are deprived of the love of God…The power of love works in two ways: it torments sinners…Thus I say that this is the torment of Gehenna: bitter regret.”

St. Isaac of Syria, Ascetical Homily 28, p. 141, via Steve Robinson 💬