Gregory of Nyssa, on Luke 5:33

“And they said to him: Why do the disciples of John fast often, and make prayers, and the disciples of the Pharisees in like manner; but thine eat and drink?”

“(Orat. de Deit. Filii et SS.) For wine newly drawn forth, evaporates on account of the natural heat in the liquor, throwing off from itself the scum by natural action. Such wine is the new covenant, which the old skins because of their unbelief contain not, and are therefore burst by the excellence of the doctrine, and cause the grace of the Spirit to flow in vain; because into an evil soul wisdom will not enter. (Sap. 1:4.)”

Imported from an open dataset — not yet checked against the printed edition.