“This then is the true logic of religion...”
This then is the true logic of religion, that is, when we are persuaded that God is reconcilable and easily pacified, because he is by nature inclined to mercy, and also, when we thus apply this doctrine to ourselves, or to our own peculiar benefit, — As God is by nature merciful, I shall therefore know and find him to be so. Until then we be thus persuaded, let us know that we have made but little progress in the school of God. And hence it appears very clear from this passage, that the Papacy is a horrible abyss; for no one under that system can have a firm footing, so as to be fully persuaded that God will be merciful to him; for all that they have are mere conjectures. But we see that the Prophet reasons very differently, God loves mercy; he will therefore have mercy on us: and then he adds, He will return; [202] and this is said lest the temporary wrath or severity of God should disquiet us. Though God then may not immediately shine on us with his favor, but, on the contrary, treat us sharply and roughly, yet the Prophet teaches us that we are to entertain good hope. — How so? He will return, or, as he said shortly before, He will not retain perpetually his wrath: for it is for a moment that he is angry with his Church; and he soon remembers mercy.
The Prophet now specifies what sort of mercy God shows to the faithful, For he will tread down our iniquities; he had said before that he passes by the wickedness of his elect people. He will then tread down our iniquities; and he will cast [203] into the depth of the sea all their sins; that is our sins shall not come in remembrance before him. We hence learn what I have said before — that God cannot be worshipped sincerely and from the heart until this conviction be fixed and deeply rooted in our hearts, that God is merciful, not in general, but toward us, because we have been once adopted by him and are his heritage. And then were the greater part to fall away, we should not fail in our faith; for God preserves the remnant in a wonderful manner. And lastly, let us know, that whenever we flee to God for mercy, pardon is ever ready for us, not that we may indulge in sin, or take liberty to commit it, but that we may confess our faults and that our guilt may appear before our eyes: let us know, that the door is open to us; for God of his own good will presents himself to us as one ready to be reconciled.
It is also said, He will cast our sins into the depth of the sea. We hence learn that there is a full remission of sins, not half as the Papists imagine, for God, they say, remits the sin, but retains the punishment. How frivolous this is, the thing itself clearly proves. The language of the Prophet does however import this, that our sins are then remitted when the records of them are blotted out before God.
— John Calvin, Commentary on Micah 7