“Our sins are great; every sin is great; but there are some that in our apprehension seem to be greater than others. There are crimes that the lip of modesty could not mention. I might go far in this pulpit this morning in describing the degradation of human nature in the sins which it has invented. It is amazing how the ingenuity of man seems to have exhausted itself in inventing fresh crimes. Surely there is not the possibility of the invention of a new sin. But if there be, ere long man will invent it, for man seemeth exceedingly cunning, and full of wisdom in the discovery of means of destroying himself and the endeavor to injure his Maker. But there are some sins that show a diabolical extent of degraded ingenuity — some sins of which it were a shame to speak, of which it were disgraceful to think.

But note here: ‘The blood of Jesus Christ cleanseth from all sin.’ There may be some sins of which a man cannot speak, but there is no sin which the blood of Christ cannot wash away. Blasphemy, however profane, lust, however bestial; covetousness, however far it may have gone into theft and rapine; breach of the commandments of God, however much of riot it may have run, all this may be pardoned and washed away through the blood of Jesus Christ. In all the long list of human sins, though that be long as time, there standeth but one sin that is unpardonable, and that one no sinner has committed if he feels within himself a longing for mercy, for that sin once committed, the soul becomes hardened, dead, and seared, and never desireth afterwards to find peace with God.”

– Charles Spurgeon, The Evil and Its Remedy