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"It will be necessary to add to what has been said this remaining statement also; viz. that those good things which are held out in the Gospels to those who have led a godly life, are not such as can be precisely described. For how is that possible with things which “eye hath not seen, neither ear heard, neither have entered into the heart of man”?
Indeed, the sinner's life of torment presents no equivalent to anything that pains the sense here. Even if some one of the punishments in that other world be named in terms that are well known here, the distinction is still not small. When you hear the word fire, you have been taught to think of a fire other than the fire we see, owing to something being added to that fire which in this there is not; for that fire is never quenched, whereas experience has discovered many ways of quenching this; and there is a great difference between a fire which can be extinguished, and one that does not admit of extinction.
That fire, therefore, is something other than this. If, again, a person hears the word “worm,” let not his thoughts, from the similarity of the term, be carried to the creature here that crawls upon the ground; for the addition that it “dieth not” suggests the thought of another reptile than that known here. Since, then, these things are set before us as to be expected in the life that follows this, being the natural outgrowth according to the righteous judgment of God, in the life of each, of his particular disposition, it must be the part of the wise not to regard the present, but that which follows after, and to lay down the foundations for that unspeakable blessedness during this short and fleeting life, and by a good choice to wean themselves from all experience of evil, now in their lifetime here, hereafter in their eternal recompense" (Great Catechism XL).
Gregory of Nyssa : Date of birth unknown; died after 385 or 386. He belongs to the group known as the "Cappadocian Fathers", a title which reveals at once his birthplace in Asia Minor. He fights against those who deny the divinity of Christ (Arianism). He was also a great mystic theologian. He is the younger brother of Basil the Great.