John 10:13

A Great matter, beloved, a great matter it is to preside over a Church: a matter needing wisdom and courage as great as that of which Christ speaketh, that a man should lay down his life for the sheep, and never leave them deserted or naked; that he should stand against the wolf nobly. For in this the shepherd differs from the hireling; the one always looks to his own safety, caring not for the sheep; the other always seeks that of the sheep, neglecting his own. Having therefore mentioned the marks of a shepherd, Christ hath put two kinds of spoilers; one, the thief who kills and steals; the other, one who doth not these things, but who when they are done doth not give heed nor hinder them.

"But the hireling flees, because he is a hireling, and the sheep are not his concern," that is, because he loves the reward and not the sheep. Whence Gregory: "He who, in presiding over the sheep, does not love the sheep but seeks earthly gain, …

(Hom. in Evang. xiv.) Some there are who love earthly possessions more than the sheep, and do not deserve the name of a shepherd. He who feeds the Lord's flock for the sake of temporal hire, and not for love, is an hireling, not a shepherd. An hireling is he who holds the place of shepherd, but seeketh not the gain of souls, who panteth after the good things of earth, and rejoices in the pride of station. (Hom. in Evang. xiv.) But whether a man be a shepherd or an hireling, cannot be told for certain, except in a time of trial. In tranquil times, the hireling generally stands watch like the shepherd. But when the wolf comes, then every one shows with what spirit he stood watch over the flock. (Hom. in Evang. xiv.) The wolf too cometh upon the sheep, whenever any spoiler and unjust person oppresses the humble believers. And he who seems to be shepherd, but leaves the sheep and flees, is he who dares not to resist his violence, from fear of danger to himself. He flees not by changing place, but by withholding consolation from his flock. The hireling is inflamed with no zeal against this injustice. He only looks to outward comforts, and overlooks the internal suffering of his flock. The hireling fleeth, because he is an hireling, and careth not for the sheep. The only reason that the hireling fleeth, is because he is an hireling; as if to say, He cannot stand at the approach of danger, who doth not love the sheep that he is set over, but seeketh earthly gain. Such an one dares not face danger, for fear he should lose what he so much loves.

Now he shows how the above-mentioned marks are related, for the third follows from the first two. Since the evil shepherd seeks his own advantage and has no love or solicitude for the flock, it follows that he is not willing to endure any inconvenience …

The Lord acts quite differently from this thief. He gives divine life, illuminates both our thoughts with good inspirations and our bodies with good deeds; He gives also something superabundant, namely that we can bring benefit to others as well through the gift of teaching, …