But how could He not believe him, who knew his heart? Therefore Peter answered after this: "Lord, You know all things; You know that I love You." And Jesus said to him all three times: "Feed My sheep."
Besides this, the Savior's threefold appeal to Peter and Peter's threefold confession before his Lord had another special and beneficial purpose for the Apostle. He to whom the keys of the Kingdom and the authority to bind and loose had been given had himself been bound three times by fear and faintheartedness (Mt 26:69-75). The Lord therefore looses him three times by His appeal and by his confession of strong love.
The feeding of Christ's rational flock is assigned to all the Apostles and their successors. "Take heed to yourselves and to all the flock," the Apostle Paul cries to the presbyters of the Church, "in which the Holy Spirit has made you bishops, to shepherd the Church of the Lord and God, which He purchased with His own Blood" (Acts 20:28).
And the Apostle Peter says to the elders: "Shepherd the flock of God that is among you, overseeing it not by compulsion, but willingly and according to God; not for unjust gain, but eagerly; not as domineering over those allotted to you, but being examples to the flock. And when the Chief Shepherd appears, you will receive the unfading crown of glory" (1 Pet 5:2-4).
To such an end came this worshiper who had denied Him. He had been carried away by self-confidence, humbled by denial, cleansed by tears, praised for confession, and crowned by martyrdom. To such an end he came, so that in perfect love he might die in the name of Him with whom, in perverse haste, he had promised to accept death.
Let him, strengthened by His Resurrection, now do what he rashly promised when he was weak. It was fitting that first Christ should die for the salvation of Peter, and afterward Peter for the preaching of Christ. What human rashness had dared was untimely, while truth established this order.
Peter thought he would lay down his life for Christ (cf. Jn 13:37), for his Redeemer, while Christ had come to lay down His life for all His own, among whom Peter was. Behold, this has now been accomplished. Let true strength of heart, by His gift, now be ready to accept death in the name of the Lord. Let false self-confidence no longer make presumptuous claims while we deceive ourselves.
Now there is reason for us not to fear departure from this life, for in the Lord's Resurrection an example of future life has been given to us. Now there is reason, Peter, for you not to fear death. He lives whom you mourned as dead, and whom in fleshly love you strove to keep from dying for us (cf. Mt 16:21-22).
You dared to go before the Leader, and you feared His pursuer. Now that the price has been paid for you, there is reason for you to follow the Redeemer, and to follow Him even to death on the cross. You have heard the words of Him whose truthfulness you have already found. He who already foretold your denial has foretold that you will suffer.
But first the Lord asks what was known to Him, and not once, but a second and a third time: whether Peter loves Him. As many times as He hears from Peter that he loves, so many times He entrusts to Peter the feeding of His sheep. To the threefold denial is joined a threefold confession, so that the tongue may show no less obedience to love than to fear. It is also so that the expected death, as it were, may sound from his mouth no less than the present life.
Let feeding the Lord's flock be the manifestation of love, if denial of the Shepherd was the manifestation of fear. Those who feed Christ's sheep while inwardly wishing them to belong to themselves and not to Christ show that they love themselves. They do this from desire either for glory, authority, or profit, and do not love Christ from an inclination to obedience, service, and the reverence of God.
This voice of Christ, repeated so many times, warns against those concerning whom the Apostle lamented that they seek their own things and not the things of Jesus Christ (Phil 2:21). What else do the words "Do you love Me? Feed My sheep" mean, except the following words that He might have spoken?
"If you love Me, do not think of feeding yourself, but feed My sheep, not as your own. Seek in them My glory, not your own; My dominion, not your own; My profit, not your own. Then you will not be found in the company of those who belong to perilous times (cf. 2 Tim 3:1), who love themselves and the other things connected with this root of evil."
For when the Apostle had said, "Men will be lovers of themselves," he then added: "lovers of money, boastful, proud, blasphemers, disobedient to parents, ungrateful, intent on wickedness, impious, without feeling, false, incontinent, implacable, not lovers of the good, traitors, dissolute, blinded, lovers of pleasure rather than lovers of God, having the form of piety but denying its power" (cf. 2 Tim 3:2-5).
All these vices flow, as from a spring, from that vice which he placed first: self-love. Deservedly was Peter asked: "Do you love Me?" And he answered: "I love You." And it was said to him: "Feed My sheep." A second time and a third time this was said.
By this it was also shown that the words amor and dilectio mean one and the same thing. For the Lord too, in the final instance, does not ask, Diligis me? but Amas me?
In the Latin translation of the Gospel, in Jn 21:15-17, the verbs amo and diligo are used as equivalent terms. Amo expresses sensory and more intimate love, while diligo expresses love containing attachment, respect, and honor. In the first two instances the Lord Jesus Christ asked Peter, Diligis me? and heard in answer, amo te. In the third instance the Lord asked, Amas me? and Peter answered, amo te.
Let us therefore love not ourselves, but Him. In feeding His sheep, let us seek what is His and not what is ours. In some inexplicable way, everyone who loves himself and not God does not love even himself. And everyone who loves God and not himself also loves himself.
For one who cannot have life from himself will certainly die by loving himself. Therefore he does not love himself who loves himself while losing life. But when love is shown to Him from whom life comes, then by not loving himself one loves himself more, because he does not love himself for this reason: he loves Him from whom he has life.
Let those who feed Christ's sheep not be self-loving, so that they may feed them not as their own, but as His. Let them not seek to draw their own profit from them, like lovers of money. Let them not rule over them as the arrogant do. Let them not seek glory from honors received from them, like the proud. Let them not go so far as to beget heresies, like blasphemers.
Let them not depart from the holy fathers, like those disobedient to parents. Let them not repay evil for good to those who wish to correct them because they do not want them to perish, like the ungrateful. Let them not kill either their own souls or those of others, like those intent on wickedness.
Let them not tear apart the maternal womb of the Church, like the impious. Let them not lack compassion for the weak, like those without feeling. Let them not try to defile the glory of the saints, like the false. Let them not give free rein to their lusts, like the incontinent. Let them not persist in disputes, like the implacable.
Let them not refuse to come to aid, like those who are not lovers of the good. Let them not, like traitors, report to those hostile to the pious what they learned as a secret. Let them not harm human modesty by striving for the shameless, like the dissolute. Let them not be ignorant of what they say and what they affirm (cf. 1 Tim 1:7), like the blinded.
Let them not prefer fleshly pleasures to spiritual joys, as do those who love pleasure rather than God. For these and similar vices, whether they are all found in one man or some prevail in some and others in others, all grow from that root, that men are lovers of themselves.
Those who feed Christ's sheep must especially beware of this vice, so that they do not seek their own things, but the things of Jesus Christ. Let them not use for the satisfaction of their own desires their ministry to those for whom the Blood of Christ was poured out.
Love for Him must be kindled to such spiritual flame in the one who feeds His sheep that it overcomes even the natural fear of death. Because of this fear we do not wish to die, even when we wish to live with Christ. For the Apostle also says that he has a desire to depart and live with Christ (cf. Phil 1:23). Yet he groans under the burden and does not wish to be unclothed but clothed, so that what is mortal may be swallowed up by life (cf. 2 Cor 5:4).