Genesis 4:13

We have here a further account of the proceedings against Cain. I. Here is Cain's complaint of the sentence passed upon him, as hard and severe. Some make him to speak the language of despair, and read it, My iniquity is greater than that it may be forgiven; and so what he says is a reproach and affront to the mercy of God, which those only shall have the benefit of that hope in it. There is forgiveness with the God of pardons for the greatest sins and sinners; but those forfeit it who despair of it. Just now Cain made nothing of his sin, but now he is in the other extreme: Satan drives his vassals from presumption to despair. We cannot think too ill of sin, provided we do not think it unpardonable. But Cain seems rather to speak the language of indignation: My punishment is greater than I can bear; and so what he says is a reproach and affront to the justice of God, and a complaint, not of the greatness of his sin, but of the extremity of his punishment, as if this were disproportionable to his merits. Instead of justifying God in the sentence, he condemns him, not accepting the punishment of his iniquity, but quarrelling with it. Note, Impenitent unhumbled hearts are therefore not reclaimed by God's rebukes because they think themselves wronged by them; and it is an evidence of great hardness to be more concerned about our sufferings than about our sins. Pharaoh's care was concerning this death only, not this sin (Exo 10:17); so was Cain's here. He is a living man, and yet complains of the punishment of his sin, Lam 3:39. He thinks himself rigorously dealt with when really he is favourably treated; and he cries out of wrong when he has more reason to wonder that he is out of hell. Woe unto him that thus strives with his Maker, and enters into judgment with his Judge.…

4:13-14 For Cain, eviction from the land—the domain of his vocation as a farmer (see 4:2; cp. 3:23)—amounted to exile from God’s presence. The Israelites were warned that unfaithfulness to the Sinai covenant would similarly result in eviction from the Promised Land and from God’s presence in the Temple (see, e.g., Lev 26:27-32).