I do not know for what purpose God allows the Turk to rage and the pope to rave against the Christians. His face is altogether terrible when the Turk, the pope, and the tyrants rage with the sword and with slaughtering; but when heretics do so with their errors, heresies, and offenses, who will show us the face of God here—the face which we long to see? But nothing will happen. “You will see My back,” says the Lord (Ex. 33:23). “Cling to My Word, and believe. Entrust the administration and preservation of all things to Me. Let Me do as I please. But do not hesitate to risk wife, children, and all you possess rather than to reject or deny My Word. If you do not see what I am doing now, Peter, you will know later” (cf. John 13:7).
Luther, M. (1999, c1966). Vol. 8: Luther’s works, vol. 8 : Lectures on Genesis: Chapters 45-50 (J. J. Pelikan, H. C. Oswald & H. T. Lehmann, Ed.). Luther’s Works (8:32). Saint Louis: Concordia Publishing House.