One must not therefore eat the flesh of the lamb raw, as the slaves of the letter do in the manner of animals which are irrational and quite savage. In relation to men who are truly rational through their desire to understand the spiritual aspects of the world, the former [slaves of the letter] share the company of wild beasts.We must strive, however, in transforming the rawness of Scripture into boiled food, not to transform what has been written into what is flaccid, watery and limp. This is what they do who “have itching ears and” turn them away “from the truth” and transform the anagogical meanings so far as they are concerned to the carelessness and wateriness of their manner of life.
Children of purity and disciples of chastity, let us celebrate the praises of the virgin-born God with lips all pure. Being counted worthy to partake of the flesh of the spiritual Lamb, let us take the head with the feet, understanding the head as the divinity and the feet as the humanity.
“You shall eat it with its head and shanks and inner organs.” To me, the head seems to be that of the Lamb, written of in St. John’s Gospel: “In the beginning was the Word, and the Word was with God; and the Word was God; he was in the beginning with God.” The shanks represent the human nature that he deigned to assume for our salvation. Another interpretation, however, is also possible. The head may be taken to signify spiritual understanding; the shanks, historical narrative; the inner organs are whatever lies hidden within the letter, whatever is not perceived on the surface but is brought to light by exegetes only after they have well considered it in painstaking investigation.
[AD 253] Origen of Alexandria on Exodus 12:9