“Simon (son) of John, lovest thou me?” By these words Christ means that no man can faithfully serve the Church, and employ himself in the feeding of the flock, if he do not look higher than to men. First, the office of feeding is in itself laborious and troublesome; since nothing is more difficult than to keep men under the yoke of God, among whom there are many who are weak, others who are wanton and unsteady, others who are dull and sluggish, and others who are slow and unteachable. Satan now brings forward as many causes of offense as he can, that he may destroy or weaken the courage of a good pastor. In addition to this, we must take into account the ingratitude of many and other causes of disgust. No man, therefore, will steadily persevere in the discharge of this office, unless the love of Christ shall reign in his heart, in such a manner that, forgetful of himself and devoting himself entirely to Christ, he overcomes every obstacle.