“Speak to the people of Israel, saying, These are the living things that you may eat among all the animals that are on the earth.
2. These are the beasts which ye shall eat. The holy fathers, before the birth of Moses, knew what animals were unclean; of which fact Noah afforded a manifest proof, when, by God’s command, he took into the ark seven pairs of the clean animals, and offered of them his sacrifice of thanksgiving to God.
Now that Aaron was consecrated a high priest over the house of God, God spoke to him with Moses, and appointed them both as joint-commissioners to deliver his will to the people. He spoke both to Moses and to Aaron about this matter; for it was particularly required of the priests that they should put a difference between clean and unclean, and teach the people to do so.
Commenting on Leviticus 11:1-8
Speak unto the children of Israel, saying,.... For to them only belong the following laws, and not unto the Gentiles, as Jarchi rightly observes; these were parts of the ceremonial law, which was peculiarly given to them, and lay, among other things, in meats and drinks, and now abolished; for it is not what goes into a man that defiles him; nor is anything common...