Commentaries:
The clean and unclean laws are specifically mentioned early in God's Word, in the account of the Noachian Flood, when Noah was commanded to take "seven each of every clean animal" (Genesis 7:2). When he and his family were back on dry land, Noah "took of every clean animal and of every clean bird, and offered burnt offerings on the altar" (Genesis 8:20). This suggests that these laws were known and practiced before the Flood'even from the earliest days of mankind (compare Genesis 4:4, Abel's acceptable offering). Since there were no Jews or Israelites then-not even any Hebrews-these laws are obviously for all humankind.
John O. Reid
Did God Change the Law of Clean and Unclean Meats?
Since the law of clean and unclean was in force in Noah's time, and possibly in Abel's lifetime (Genesis 4:4), it was not made obsolete with the passing of the Old Covenant. This is a vital principle to remember regarding the Old and New Covenants: What did not originate with the Old Covenant did not die with it.
Richard T. Ritenbaugh
Clean and Unclean Meats
Other Forerunner Commentary entries containing Genesis 7:2:
Genesis 7:2
Genesis 8:20
Hebrews 11:4-7