Martin Luther's letter to Jerome Weller on his guilt consciousness
Whenever the devil worries you with these thoughts, seek the company of men at once, or drink somewhat more liberally, jest and play some jolly prank, or do anything exhilarating. Occasionally a person must drink somewhat more liberally, engage in plays, and jests, or even commit some little sin from hatred and contempt of the devil, so as to leave him no room for raising scruples in our conscience about the most trifling matters. For when we are overanxious and careful for fear that we may be doing wrong in any matter, we shall be conquered.
Accordingly, if the devil should say to you: By all means, do not drink! you must tell him: Just because you forbid it, I shall drink, and that, liberally. In this manner you must always do the contrary of what Satan forbids. When I drink my wine unmixed, prattle with the greatest unconcern, eat more frequently, do you think that I have any other reason for doing these things than to scorn and spite the devil who has attempted to spite and scorn me? Would God I could commit some real brave sin to ridicule the devil, that he might see that I acknowledge no sin and am not conscious of having committed any.
We must put the whole law entirely out of our eyes and hearts,–we, I say, whom the devil thus assails and torments. Whenever the devil charges us with our sins and pronounces us guilty of death and hell, we ought to say to him: I admit that I deserve death and hell; what, then, will happen to me? Why, you will be eternally damned! By no means; for I know One who has suffered and made satisfaction for me. His name is Jesus Christ, the Son of God. Where He abides, there will I also abide.
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. (Letter to Melanchthon, August 1, 1521, American Edition, Luther’s Works, vol. 48, pp. 281-82)
Regardless of the degree of sin mentioned (drinking, jesting, prattling/idle talk etc), did Luther believe that conviction of sin and guilt consciousness comes from Satan, not God? If yes, what could be the source of such teachings, such as Augustin? Does according to Luther, Satan commands against drinking? Did he write more such supposed commands by Satan? You may include some Biblical and Catholic Church perspective for context, it will be helpful.
Guilt consciousness: the state of being aware of one's guilt.