John Chrysostom

But some one perhaps will say, he meant not for all men, but for all the faithful. How then does he speak of kings? for kings were not then worshipers of God, for there was a long succession of ungodly princes. And that he might not seem to flatter them, he says first, "for all men," then "for kings"; for if he had only mentioned kings, that might have been suspected. And then since the soul of some Christians might be slow at hearing this, and reject the exhortation, if at the celebration of the holy Mysteries it was necessary to offer prayers for a heathen king, he shows them the advantage of it, thus at least to reconcile them to the advice, "that we may lead a quiet and peaceable life"; as much as to say, Their safety is a security to us; as also in his Epistle to the Romans, he exhorts them to obey their rulers, "not for wrath but for conscience' sake." For God has appointed government for the public good. When therefore they make war for this end, and stand on guard for our security, were it not unreasonable that we should not offer prayers for their safety in wars and dangers? It is not therefore flattery, but agreeable to the rules of justice. For if they were not preserved, and prospered in their wars, our affairs must necessarily be involved in confusion and trouble; and if they were cut off, we must either serve ourselves, or be scattered up and down as fugitives. For they are a sort of bulwarks thrown up before us, within which those who are inclosed are in peace and safety.