Who can understand the riches of the glory of this grace? Here this rich and divine bridegroom Christ marries this poor, wicked harlot, redeems her from all her evil, and adorns her with all his goodness. Her sins cannot now destroy her, since they are laid upon Christ and swallowed up by him. And she has that righteousness in Christ, her husband, of which she may boast as of her own and which she can confidently display alongside her sins in the face of death and hell and say, “If I have sinned, yet my Christ, in whom I believe, has not sinned, and all his is mine and all mine is his,” as the bride in the Song of Solomon (2:16) says, “My beloved is mine and I am his.”

- Martin Luther, from The Freedom of a Christian