Calvin on Living Peaceably With All Men (Romans 12:18)
“If it be possible, as much as lieth in you, live peaceably with all men.” (Romans 12:18)
“Peaceableness and a life so ordered as to render us beloved by all, is no common gift in a Christian. If we desire to attain this, we must not only be endued with perfect uprightness, but also with very courteous and kind manners, which may not only conciliate the just and the good, but produce also a favorable impression on the hearts of the ungodly.
But here two cautions must be stated: We are not to seek to be in such esteem as to refuse to undergo the hatred of any for Christ, whenever it may be necessary. And indeed we see that there are some who, though they render themselves amicable to all by the sweetness of their manners and peaceableness of their minds, are yet hated even by their nearest connections on account of the gospel. The second caution is that courteousness should not degenerate into compliance, so as to lead us to flatter the vices of men for the sake of preserving peace. Since then it cannot always be, that we can have peace with all men, he has annexed two particulars by way of exception, If it be possible, and, as far as you can. But we are to conclude from what piety and love require, that we are not to violate peace, except when constrained by either of these two things. For we ought, for the sake of cherishing peace, to bear many things, to pardon offenses, and kindly to remit the full rigor of the law; and yet in such a way, that we may be prepared, whenever necessity requires, to fight courageously: for it is impossible that the soldiers of Christ should have perpetual peace with the world, whose prince is Satan.
— John Calvin