5:41 Compel thee to go one mile. In those days, when there were no stages, railroad trains, postal lines, or regular means of conveyance. It was common for officers traveling to impress men to assist them on the route. It was a necessary, but oppressive, exaction. Christ directs to yield the service, and double it rather refuse it.
Mile. A Roman word from mille, a thousand. A Roman miles was a thousand paces, 1,520 yards.
5:40-41 Where the damage is not great, choose rather to suffer it, though possibly it may on that account be repeated, than to demand an eye for an eye, to enter into a rigorous prosecution of the offender. The meaning of the whole passage seems to be, rather than return evil for evil, when the wrong is purely personal, submit to one bodily wrong after another, give up one part of your goods after another, submit to one instance of compulsion after another. That the words are not literally to be understood, appears from the behaviour of our Lord himself, John 18:22,23.
5:38-42 The plain instruction is, Suffer any injury that can be borne, for the sake of peace, committing your concerns to the Lord's keeping. And the sum of all is, that Christians must avoid disputing and striving. If any say, Flesh and blood cannot pass by such an affront, let them remember, that flesh and blood shall not inherit the kingdom of God; and those who act upon right principles will have most peace and comfort.