Gregory the Great

Those who have experienced the sins of the flesh are to be admonished to observe vigilantly with how great a benevolence God opens the bosom of his pity to us, if after transgressions we return to him. He says through the prophet, "If a man puts away his wife, and she goes from him and becomes another man's, shall he return to her again? Shall not that woman be polluted and contaminated? But you have played the harlot with many lovers. Yet return again to me, says the Lord." So, concerning the wife who has played the harlot and has deserted, the argument of justice is put forward. Yet to us, returning after the fall, not justice but pity is displayed. Where we are surely meant to gather, how great is our wickedness if we return not, even after transgression, seeing that, when transgressing, we are spared with so great pity. Or what pardon for the wicked will there be from him who, after our sin, ceases not to call us.