Genesis 3:19 In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it was thou taken: for dust thou art, and unto dust shalt thou return. 21 Unto Adam also and to his wife did the Lord God make coats of skins, and clothed them.
The Bible states that instead of giving strict justice to Adam, God did His best to mitigate the adverse effects of Adam’s sin, and the toil, labor and sweat that would be required to till the soil was a blessing, not a curse, because one of the greatest curses that can come upon us is to be idle, and have nothing to do.
[Youth Instructor 1906 par 9] God does not stand toward the sinner as an executor of the sentence against transgression; but he leaves the rejecters of his mercy to themselves, to reap that which they have sown. (That is, after God has done everything possible to save persons to the uttermost.)
What God did for Cain is what He does for you and me, and for every person who has walked contrary to His laws; God does not treat us as we deserve, but rather looks for ways and means through Christ, to lessen the adverse results of our wayward course of action. This is what God has always done even when He knows persons like Cain will never repent.
Genesis 4:15 And the Lord said unto him, Therefore, whosoever slays Cain, vengeance shall be taken on him sevenfold. And the Lord set a mark upon Cain, lest any finding him should kill him.
May The Lord add His blessing to the study of His word. “Good night” and God bless!