God's Promise To Not Curse The Ground Again

Genesis 8:20-22
 
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.