Genesis 7:2 (NKJV)

"You shall take with you seven each of every clean animal, a male and his female; two each of animals that are unclean, a male and his female

Genesis 8:20 (NKJV)

Then Noah built an altar to the LORD, and took of every clean animal and of every clean bird, and offered burnt offerings on the altar.

According to these passages, Noah knew about clean animals and clean birds.

How did Noah know this even before the Law was given?

  • @Bʀɪᴀɴ This is not a duplicate question. I'm asking not asking about the meaning of clean and unclean birds. I'm asking about Noah.
    – user20490
    Dec 7 '17 at 19:09
  • If Noah was righteous, I'm looking for insight into his righteousness through this scripture.
    – user20490
    Dec 7 '17 at 19:09
  • While worded differently, your question is the same as the one I linked to. The currently accepted answer directly answers your "how did Noah know this?" question. But it takes 5 votes to close a question, so yours may very well remain open if 4 others don't vote to close it too.
    – user6503
    Dec 7 '17 at 19:56
  • @Bʀɪᴀɴ But there was only one answer to that question. And that is not an answer to this question. That is not an answer that I will accept. So I deserve a right to alternative view points.
    – user20490
    Dec 7 '17 at 20:54
  • 1
    I don't understand why you seem to think that this distinction (along with many others) first appeared at the time of Moses. The Law-Giver revived Jewish customs (after they have been more-or-less weakened, corrupted, and/or abandoned due to Egyptian influence), expanded them (in a logical and self-consistent manner), strengthened them, systematized them, and enforced their observance, but he did not “randomly” amend the ancestral national traditions.
    – Lucian
    Dec 8 '17 at 4:45

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