On the Making of Man by Gregory of Nyssa — Read

But someone perhaps will say that man will not be returning to the same form of life, if as it seems, we formerly existed by eating, and shall hereafter be free from that function. I, however, when I hear the Holy Scripture, do not understand only bodily meat, or the pleasure of the flesh; but I recognize another kind of food also, having a certain analogy to that of the body, the enjoyment of which extends to the soul alone: "Eat of my bread," is the bidding of Wisdom to the hungry; and the Lord declares those blessed who hunger for such food as this, and says, "If any man thirst, let him come unto Me, and drink": and "drink ye joy," is the great Isaiah's charge to those who are able to hear his sublimity. There is a prophetic threatening also against those worthy of vengeance, that they shall be punished with famine; but the "famine" is not a lack of bread and water, but a failure of the word: -- "not a famine of bread, nor a thirst for water, but a famine of hearing the word of the Lord."

We ought, then, to conceive that the fruit in Eden was something worthy of God's planting (and Eden is interpreted to mean "delight"), and not to doubt that man was hereby nourished: nor should we at all conceive, concerning the mode of life in Paradise, this transitory and perishable nutriment: "of every tree of the garden," He says, "thou mayest freely eat."