Catena Aurea on Matthew 5:38–42: Pseudo-Chrysostom

For it were an unworthy thing that a believer should stand in his cause before an unbelieving judge. Or if one who is a believer, though (as he must be) a worldly man, though he should have reverenced you for the worthiness of the faith, sues you because the cause is a necessary one, you will lose the worthiness of Christ for the business of the world. Further, every lawsuit irritates the heart and excites bad thoughts; for when you see dishonesty or bribery employed against you, you hasten to support your own cause by like means, though originally you might have intended nothing of the sort.