John Frederick's Good Confession

The words of Elector John Frederick the Magnanimous of Saxony, written to Emperor Charles V, while the emperor was holding Elector John in prison and threatening him with his life for refusing to accept the erroneous Augsburg Interim:

I cannot refrain from informing Your Majesty that since the days of my youth I have been instructed and taught by the servants of God’s Word, and by diligently searching the prophetic and apostolic Scriptures I have also learned to know, and (this I testify as in the sight of God) unswervingly to adhere in my conscience to this, that the articles composing the Augsburg Confession, and whatever is connected therewith, are the correct, true, Christian, pure doctrine, confirmed by, and founded in, the writings of the holy prophets and apostles, and of the teachers who followed in their footsteps, in such a manner that no substantial objection can be raised against it....Since now in my conscience I am firmly persuaded of this, I owe this gratefulness and obedience to God, who has shown me such unspeakable grace, that, as I desire to obtain eternal salvation and escape eternal damnation, I do not fall away from the truth of His almighty will which His Word has revealed to me, and which I know to be the truth. For such is the comforting and also the terrible word of God: ‘Whosoever therefore shall confess Me before men, him will I confess also before My Father which is in heaven. But whosoever shall deny Me before men, him will I also deny before My Father which is in heaven.’ If I should acknowledge and adopt the Interim as Christian and godly, I would have to condemn and deny against my own conscience, knowingly and maliciously, the Augsburg Confession, and whatever I have heretofore held and believed concerning the Gospel of Christ, and approve with my mouth what I regard in my heart and conscience as altogether contrary to the holy and divine Scriptures. This, O my God in heaven, would indeed be misusing and cruelly blaspheming Thy holy name,...for which I would have to pay all too dearly with my soul. For this is truly the sin against the Holy Ghost concerning which Christ says that it shall never be forgiven, neither in this nor in the world to come, i.e., in eternity.

Quoted from F. Bente, Historical Introductions to the Lutheran Confessions (St. Louis, CPH, 2005) 224-225.