The Great Commentary of Cornelius à Lapide
John 10:11
. am the good Shepherd, &c. I, the one only Prince of Shepherds, who will lay down My life for My sheep, to redeem them by My death from death, and confer on them both present and eternal life. Neither prophets, nor apostles, nor any one else could do this. For though they were slain for the sake of the faithful, yet they did not redeem them, sanctify, or beatify them. So Rupertus, Chrysostom, &c. S. Augustine adds that the prophets and apostles are counted as one and the same shepherd with Christ, as being under Him, sent also and guided and protected by Him. Christ therefore is that special and singular Pastor foretold by Ezekiel 34:23. (See notes in loc.)
Christ passes from the parable of the door to the more striking parable of the Shepherd. He is the door by which the sheep enter, and also the Shepherd of the sheep: that is not any ordinary one, but the chief, special, and Divine Shepherd. And He enters through the door, that is, by Himself and His own authority.
Besides this Christ rejoices in the title of Shepherd, as being most appropriate and most sweet. He used to be thus represented in very ancient pictures, at Rome, as carrying a sheep on His shoulders. Many of the patriarchs, who were types and ancestors of Christ, were shepherds, learning thereby (says Philo) to be shepherds of men, &c. "If therefore thou wishest to know and to discharge the office of a true Pastor, see how a shepherd treats his sheep. Be so eminent in doctrine and sanctity among thy faithful ones, as to appear like a rational pastor among the irrational sheep, and as an angel among men." (S. Chrysostom) He attends to his sheep one by one; let him lead them into richer pastures. He goes before them by his virtuous example, as S. Paul exhorts Titus (Tit 2:7). As a parish priest he drives away all heretics and hurtful persons. And let him feed his flock with sound doctrines and sacraments, and not fatten himself on the milk of his flock (Ezek. xxxiv. 2). Let him not be mercenary, seeking his own profit, paying court to the well-to-do and noble, and despising the rustics and mean of his flock. For Christ went about villages and towns, preaching the Gospel to the poor (Matt.xi.). Fisher, Bishop of Rochester, was a noble example of this; he refused to exchange his poor bishoprick for a wealthier one, saying that he could render a better account at the day of judgment for his few sheep and small gains than he could for greater ones. For he said, "If men did but know how exact an account would be required, they would not seek to obtain great and wealthy bishoprics." (Sanders in Schism. Angl.) A good shepherd tenderly feeds and fosters the lambs and delicate ones of his flock (see Ezek. xxxiv. 4). And so does a parish priest and a bishop. (See the life of S. Abraham written by S. Ephrem.) He came from being an anchoret to be the pastor of a wild and barbarous people, and though cruelly entreated by them, brought them by his indomitable patience, gentleness, and charity, to submit to the laws of Christ.
Jacob, like a true shepherd, watched over his flock by day and night (Gen 31:40); and shepherds were watching over their flocks by night when Christ was born. So too should a parish priest or a bishop vigilantly watch over his flock, as his first duty. A shepherd risks his own life in guarding his sheep. So should a parish priest, when persecution or pestilence threatens; as did SS. Athanasius, Chrysostom, Basil, Ambrose. Lastly, S. Peter, the chief pastor of the Church, lays down notes for the pastors under him (1Pe 5:2). See also S. Gregory (in Pastorali), S. Bernard (de Consider. ad Eugenium), and S. Augustine (Tract de Pastoribus et Ovibus).
All these duties are summed up in charity, for charity supremely loves God, and for His sake the faithful committed to its care by God. (See also chap. xxi. 15.)
The good Shepherd layeth down his life for the sheep. This does not relate so much to the parable itself, as to that which is signified by it. For the natural Shepherd ought to count his own life of greater value than the lives of his sheep. And yet he ought to protect his sheep even at the risk of his life. But the shepherd of souls is bound, by his duty, to expose his bodily life to danger, for the spiritual life of the faithful committed to his charge. And hence he is bound to stand by them in the time of the plague, or provide some other qualified person to administer the sacraments to the sick, as did S. Charles Borromeo: and for this reason was canonised. And so also all the apostles, excepting S. John, suffered martyrdom for the sake of the faithful committed to their care. And so also nearly all the Roman Pontiffs down to S. Sylvester. But the leader of them all was Christ, who alone, as the best of Shepherds, laid down His life as a ransom, while all the others did so merely to manifest their faith, and as a pattern of virtue. Ver. 12. But he that is an hireling, &c. An hireling seeks not the good of the sheep but merely his own profit. "Hirelings are they," says S. Augustine, "who seek their own things, and not the things of Christ and of the sheep." So too S. Basil. But the apostles, though they fed not their own sheep, but the sheep of Christ, were not hirelings, because they sought not their own temporal gain, but the spiritual and eternal gain of the faithful. "He is called a hireling, and not a shepherd," says S. Gregory (Hom. xiv.), "who feeds the Lord's sheep, not from deepest love, but for worldly gain. The hireling is he who holds the post of a shepherd, but seeks not to gain souls; is eager for earthly advantages, rejoices in the honour of the prelacy, feeds on temporal gains, delights in the reverence paid to him by men."
Seeth the wolf coming. "For in a time of tranquillity," says S. Gregory, "very often the hireling, as well as the true shepherd, stands on guard over the flock. But the approach of the wolf shows the temper of mind with which they did so. The wolf attacks the sheep when the violent and the spoiler oppress those who are faithful and humble. But he who seemed to be a shepherd and was not, leaves the sheep and runs away, because through fear for himself he does not venture to withstand his injustice."
Fleeth : "Not by change of place," says S. Gregory, "but by withdrawing support. He flies, because he saw injustice and held his peace: he flies, because he conceals himself by silence. To whom the prophet well says, "Ye have not gone up against him, nor raised up a wall for the house of Israel to stand in the battle in the day of the Lord" (Eze 13:5).
And the wolf catcheth them, i.e. A heretic, or any wicked man, who strives to pervert the faithful by word or example, or (as S. Gregory says) "the devil, who seizes them when he draws away this man to luxury, inflames another with avarice, puffs up another with pride, parts asunder others through anger, stimulates another with envy, supplants another by deceit. The devil therefore scatters the flock when he kills the faithful by temptations. But the hireling is not inflamed by zeal against such attacks, is not enkindled by any warmth of love. Because by looking after mere outward advantages, he carelessly takes no account of the inward injury which is done to the flock."
And hence, Christ leaves it to be gathered by contrast that the good shepherd when he sees the wolf coming neither flies nor forsakes his sheep, but stands firm and fights for them even to death, and in this way lays down his life for them. But when it is allowable for a pastor to fly when persecuted, and when not, see notes on S. Matthew 10:23. Also S. Augustine (Epis. clxxx . ad Honoratum). I use on this matter the words of S. Gregory the more freely, because he had full experience of those things in his own person.