20 And Noah builded an altar unto the Lord; and took of every clean beast, and of every clean fowl, and offered burnt offerings on the altar. 21 And the Lord smelled a sweet savour; and the Lord said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart is evil from his youth; neither will I again smite any more every thing living, as I have done. 22 While the earth remaineth, seedtime and harvest, and cold and heat, and summer and winter, and day and night shall not cease.
I mentioned yesterday how Noah represented a new beginning for mankind, and this notion is further echoed in today’s verses. And here we see that God is establishing a new covenant with mankind. The natural order of the world, its cycles and seasons, its days and nights, all these things will continue, and there will not be any more mass extinction.
And He promises this even knowing that man will go astray again. He calls out how “the imagination of man’s heart is evil from his youth,” but that doesn’t change His promise. Jesus would accurately observe “he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust” (Matthew 5:45). From this point on it is official and covenanted: God knows that is committed to seeing this human experiment all the way through. No matter how many rebellions we make He will continue to work with us.