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.

~ Martin Luther