John Chrysostom — as excerpted in the Catena Aurea on Matthew 10:16-18

“How wonderful that men who had never been beyond the lake in which they fished, did not straightway depart from Him on hearing these things. It was not only of their goodness, but of the wisdom of their Teacher. For to each evil He attaches somewhat of alleviation; as here He adds, for my sake; for it is no light consolation to suffer for Christ’s sake, for they did not suffer as evil or wrong doers. Again He adds, for a testimony against them.”