Ah, yes, ANOTHER Luther myth. I guess, along with the FALSE statement about Luther "tossing out" books of the Bible, we can add this one, too. However, even though I am not a "Lutheran" and Martin Luther was but one of MANY Reformers who loved the Lord Jesus Christ and His church enough to risk all he had to see the heresy eradicated and the true gospel once again heralded to the world, I must, at least for those who sincerely desire to know truth from myth, include this helpful link to these "obscure" Luther quotes:
If you are a preacher of grace, then preach a true and not a fictitious grace; if grace is true, you must bear a true and not a fictitious sin. God does not save people who are only fictitious sinners. Be a sinner and sin boldly, but believe and rejoice in Christ even more boldly, for he is victorious over sin, death, and the world. As long as we are here [in this world] we have to sin. This life is not the dwelling place of righteousness, but, as Peter says, we look for new heavens and a new earth in which righteousness dwells. It is enough that by the riches of God’s glory we have come to know the Lamb that takes away the sin of the world. No sin will separate us from the Lamb, even though we commit fornication and murder a thousand times a day. Do you think that the purchase price that was paid for the redemption of our sins by so great a Lamb is too small? Pray boldly—you too are a mighty sinner. [LW 48:281-282].
Conclusion
I've written an extensive treatment of this quote: Did Luther say, “Be a sinner and sin boldly”? A Look at Justification By Faith Alone and Good Works in Luther’s Theology.
Luther was prone to strong hyperbole. It's his style, and this statement is a perfect example. The first thing to recognize is that the sentence is a statement of comparison. Luther's point is not to go out and commit multiple amounts of gleeful sin everyday, but rather to believe and rejoice in Christ even more boldly despite the sin in our lives. Christians have a real savior. No amount of sin is too much to be atoned for by a perfect savior whose righteousness is imputed to the sinner who reaches out in faith.
But what then is the practical application of sinning “boldly”? What is at the heart of this comparison? Luther explains elsewhere how to take on the attitude of sinning “boldly”:
Therefore let us arm our hearts with these and similar statements of Scripture so that, when the devil accuses us by saying: You are a sinner; therefore you are damned, we can reply: The very fact that you say I am a sinner makes me want to be just and saved. Nay, you will be damned, says the devil. Indeed not, I reply, for I take refuge in Christ, who gave Himself for my sins. Therefore you will accomplish nothing, Satan, by trying to frighten me by setting the greatness of my sins before me and thus seducing me to sadness, doubt, despair, hatred, contempt, and blasphemy of God. Indeed, by calling me a sinner you are supplying me with weapons against yourself so that I can slay and destroy you with your own sword; for Christ died for sinners. Furthermore, you yourself proclaim the glory of God to me; you remind me of God's paternal love for me, a miserable and lost sinner; for He so loved the world that He gave His Son (John 3:16). Again, whenever you throw up to me that I am a sinner, you revive in my memory the blessing of Christ, my Redeemer, on whose shoulders, and not on mine, lie all my sins; for "the Lord hath laid on Him the iniquity of us all" and "for the transgression of His people was He stricken" (Is. 53:6-8). Therefore when you throw up to me that I am a sinner, you are not terrifying me; you are comforting me beyond measure.[Ewald Plass, What Luther Says 3:1315].
The strong hyperbolic comparison Luther makes between “sinning boldly” and believing and rejoicing in Christ “even more boldly” comes clear. When assaulted by the fear and doubt of Christ’s love because of previous sins or the remnants of sin in one’s life, one is thrust back into the arms of Christ “on whose shoulders, and not on mine, lie all my sins…”. Rather than promoting a license to sin by saying “sin boldly,” Luther compares the sinner to the perfect savior. Left in our sins we will face nothing but death and damnation. By Christ’s victory over sin, death, and the world, we stand clothed in His righteousness, the recipients of His grace, no matter what we have done.
No historical information exists that indicts Melanchthon of ever murdering or fornicating, even once. The point Luther is making is not to go out and murder or fornicate as much as possible, but rather to point out the infinite sacrifice of Christ’s atonement. There is no sin that Christ cannot cover. His atonement was of an infinite value. That this statement was not to be considered literally is apparent by Luther’s use of argumentum ad absurdum: do people really commit fornication and murder a thousand times a day? No. Not even the most heinous God-hating sinner is able to carry out such a daily lifestyle. http://beggarsallreformation.blogspot.com/search?q=sin+boldly
Those who want to tarnish ALL non-Catholic Christians with their supposed scandalous words of Luther, should be careful that the same trick is not played on them. Lord knows there is plenty of material with which to frolic if indeed that was our intent.
Another post by someone who cares about their FR following rather than humility and truth
Sinners are lost.
A sinner might as well just go about and sin boldly, as nothing good that anyone does can affect their salvation one iota.
God is not going to weigh our good works against our bad and see whether we're in or not based on which is greater.
Salvation is by grace through faith, in Christ, not by works of righteousness, therefore the sinner, being lost and damned, has no reason to not just go all out, except to prevent the destruction of his own life by that decadent lifestyle. But in regard to his eternal life, the sinner not sinning is gaining nothing.