170. These things, I say, are all full of consolation; especially for us who now suffer persecution from the popes and wicked princes on account of our doctrine. They have practiced against us the utmost cruelty and have vented their rage against godly men, not in Germany only, but also in other parts of Europe. And all this sin is disregarded by the papacy, as if it were nothing but a joke. Nay, the Papists really consider it to be a service toward God, Jn 16, 2. All this sin, therefore, as yet "lieth at the door." But it shall become manifest in due time. The blood of Leonard Kaiser, which was shed in Bavaria, is not silent. Nor is the blood of Henry of Zutphen, which was shed in Dietmar; nor that of our brother Anthony, of England, who was cruelly and without a hearing slain by his English countrymen. I could mention a thousand others who, although their names are not so prominent, were yet fellow-sufferers with confessors and martyrs. The blood of all these, I say, will not be silent; in due time it will cause God to descend from heaven and execute such judgment in the earth as the enemies of the Gospel will not be able to bear.
171. Let us not think, therefore, that God does not heed the shedding of our blood! Let us not imagine for a moment that God does not regard our afflictions! No! he collects all our tears, and puts them into his bottle, Ps 56, 8. The cry of the blood of all the godly penetrates the clouds and the heavens to the very throne of God, and entreats him to avenge the blood of the righteous, Ps 79, 10.
172. As these things are written for our consolation, so are they written for the terror of our adversaries. For what think you can be more horrible for our tyrants to hear than that the blood of the slain continually cries aloud and accuses them before God? God is indeed long-suffering, especially now toward the end of the world; and therefore sin lies the longer "at the door," and vengeance does not immediately follow. But it is surely true that God is most grievously offended with all this sin, and that he will never suffer it to pass unpunished.
173. Such judgment of God on Cain, however, I do not believe to have been executed on the first day, but some time afterward. For it is God's nature to be long-suffering, inasmuch as he waits for the sinner to turn. But he does not, on that account, fail to punish him. For he is the righteous judge both of the living and of the dead, as we confess in our Christian Faith. Such judgment God exercised in the very beginning of the world with reference to these two brothers. He judged and condemned the living murderer, and justified murdered Abel. He excommunicated Cain and drove him into such agonies of soul that the space of the whole creation seemed too narrow to contain him. From the moment Cain saw that God would be the avenger of his brother's blood, he felt nowhere safe. To Abel, on the other hand, God gave for enjoyment the full width of earth and heaven.
174. Why, then, should we ever doubt that God ponders and numbers in his heart the afflictions of his people, and that he measures our tears and inscribes them on adamantine tablets? And this inscription the enemies of the Church shall never be able to erase by any device whatever except by repentance. Manasseh was a terrible tyrant and a most inhuman persecutor of the godly. And his banishment and captivity would never have sufficed to blot out these sins. But when he acknowledged his sin and repented in truth, then the Lord showed him mercy.
So Paul had, and so the pope and the bishops have now, only one way left them: to acknowledge their sin and to supplicate the forgiveness of God. If they will not do this, God in his wrath will surely require at their hands the blood of the godly. Let no one doubt this!