“For there is no such Christ that died for sinners who do not, after the forgiveness of sins, desist from sins and lead a new life. Thus [the antinomians] preach Christ nicely with Nestorian and Eutychian logic that Christ is and yet is not Christ.
“They may be fine Easter preachers, but they are very poor Pentecost preachers, for they do not preach de sanctificatione et vivificatione Spiritus Sancti, “about the sanctification by the Holy Spirit,” but solely about the redemption of Jesus Christ, although Christ (whom they extoll so highly, and rightly so) is Christ, that is, he has purchased redemption from sin and death so that the Holy Spirit might transform us out of the old Adam into new men— we die unto sin and live unto righteousness, beginning and growing here on earth and perfecting it beyond, as St. Paul teaches.
“Christ did not earn only gratia, ‘grace,’ for us, but also donum, ‘the gift of the Holy Spirit,’ so that we might have not only forgiveness of, but also cessation of, sin. Now he who does not abstain from sin, but persists in his evil life, must have a different Christ, that of the Antinomians; the real Christ is not there, even if all the angels would cry, ‘Christi! Christi!’ He must be damned with this, his new Christ…
“Our Antinomians fail to see that they are preaching Christ without and against the Holy Spirit because they propose to let the people continue in their old ways and still pronounce them saved. And yet logic, too, implies that a Christian should either have the Holy Spirit and lead a new life, or know that he has no Christ.”
-- Martin Luther, On the Councils and the Church, LW 41:113-114