Gregory the Great, on Matt 22:1

“And Jesus answering, spoke again in parables to them, saying:”

“(ubi sup.) It is to be observed, that in the first invitation nothing was said of the oxen or fatlings, but in the second it is announced that they are already killed, because Almighty God when we will not hear His words gives examples, that what we suppose impossible may become easy to us to surmount, when we hear that others have passed through it before us.”

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