Deuteronomy 14:9-21

The same observations will meet us here concerning the food of fish and of birds, as under the foregoing of beasts. Spiritually considered, and with an eye to the gospel dispensation, the whole are of importance, meaning that all uncleanness is forbidden: and these things are not only commanded to be abstained from in the deed, but even in the very word: and not once to be named among the LORD'S heritage, as becometh saints. Ephesians 5:3.