If anyone attempted to rule the world by the gospel and to abolish all temporal law and sword on the plea that all are baptized and Christian, and that, according to the gospel, there shall be among them no law or sword - or need for either - pray tell me, friend, what would he be doing? He would be loosing the ropes and chains of the savage wild beasts and letting them bite and mangle everyone, meanwhile insisting that they were harmless, tame, and gentle creatures; but I would have the proof in my wounds. Just so would the wicked under the name of Christian abuse evangelical freedom, carry on their rascality, and insist that they were Christians subject neither to law nor sword, as some are already raving and ranting.To such a one we must say: Certainly it is true that Christians, so far as they themselves are concerned, are subject neither to law nor sword, and have need of neither. But take heed and first fill the world with real Christians before you attempt to rule it in a Christian and evangelical manner. This you will never accomplish; for the world and the masses are and always will be unchristian, even if they are all baptized and Christian in name. Christians are few and far between (as the saying is). Therefore, it is out of the question that there should be a common Christian government over the whole world, or indeed over a single country or any considerable body of people, for the wicked always outnumber the good. Hence, a man who would venture to govern an entire country or the world with the gospel would be like a shepherd who should put together in one fold wolves, lions, eagles, and sheep, and let them mingle freely with one another, saying, “Help yourselves, and be good and peaceful toward one another. The fold is open, there is plenty of food. You need have no fear of dogs and clubs.” The sheep would doubtless keep the peace and allow themselves to be fed and governed peacefully, but they would not live long, nor would one beast survive another.For this reason one must carefully distinguish between these two governments. Both must be permitted to remain; the one to produce righteousness, the other to bring about external peace and prevent evil deeds. Neither one is sufficient in the world without the other. No one can become righteous in the sight of God by means of the temporal government, without Christ's spiritual government. Christ's government does not extend over all men; rather, Christians are always a minority in the midst of non-Christians. Now where temporal government or law alone prevails, there sheer hypocrisy is inevitable, even though the commandments be God's very own. For without the Holy Spirit in the heart no one becomes truly righteous, no matter how fine the works he does. On the other hand, where the spiritual government alone prevails over land and people, there wickedness is given free rein and the door is open for all manner of rascality, for the world as a whole cannot receive or comprehend it.
There are some who are still weak in faith, who ought to be instructed, and who would gladly believe as we do. But their ignorance prevents them...we must bear patiently with these people and not use our liberty; since it brings to peril or harm to body or soul...but if we use our liberty unnecessarily, and deliberately cause offense to our neighbor, we drive away the very one who in time would come to our faith. Thus St. Paul circumcised Timothy (Acts 16:3) because simple minded Jews had taken offense; he thought: what harm can it do, since they are offended because of ignorance? But when, in Antioch, they insisted that he out and must circumcise Titus (Gal. 2:3) Paul withstood them all and to spite them refused to have Titus circumcised... He did the same when St. Peter...it happened in this way: when Peter was with the Gentiles he ate pork and sausages with them, but when the Jews came in, he abstained from this food and did not eat as he did before. Then the Gentiles who had become Christians though: Alas! we, too, must be like the Jews, eat no pork, and live according to the law of Moses. But when Paul learned that they were acting to the injury of evangelical freedom, he reproved Peter publicly and read him an apostolic lecture, saying: "If you, though a Jew, live like a Gentile, how can you compel the Gentiles to live like Jews?" (Gal. 2:14). Thus we, too, should order our lives and use our liberty at the proper time, so that Christian liberty may suffer no injury, and no offense be given to our weak brothers and sisters who are still without the knowledge of this liberty.