Saint Peter Celestine
If thou lovest Me, Simon Peter, feed My lambs; feed My sheep. Alleluia, alleluia. Ps. I will extol Thee, O Lord, for Thou hast upheld me: and hast not made my enemies to rejoice over me. Glory be to the Father.
O God, Who didst raise blessed Peter Celestine to the sublime height of the pontificate, and didst teach him to prefer humility to that dignity, mercifully grant that we may have the grace by his example to disdain all the things of the world, and the happiness to attain the rewards promised to the humble. Through our Lord.
1 Peter 5:1-4, 10–11
Dearly beloved: The ancients therefore that are among you, I beseech, who am myself also an ancient and a witness of the sufferings of Christ: as also a partaker of that glory which is to be revealed in time to come: Feed the flock of God which is among you, taking care of it not by constraint, but willingly according to God: not for filthy lucre’s sake, but voluntarily: neither as lording it over the clergy, but being made a pattern of the flock from the heart. And when the prince of pastors shall appear, you shall receive a neverfading crown of glory. But the God of all grace, Who hath called us unto His eternal glory in Christ Jesus, after you have suffered a little; will Himself perfect you, and confirm you and establish you. To Him be glory and empire for ever and ever. Amen.
Psalm 106:32, 31
Let them exalt in the church of the people: and praise him in the chair of the ancients. Let the mercies of the Lord give glory to him: and his wonderful works to the children of men.
Matthew 16:18; Psalm 44:17-18
Alleluia, alleluia. Thou art Peter, and upon this rock I will build My Church. (Alleluia.)
During Eastertide the Gradual is omitted and the following Alleluia is said:
Alleluia. Thou shalt make them princes over all the earth: they shall remember Thy name throughout all generations. Alleluia.
At that time, Jesus came into the quarters of Cæsarea Philippi, and He asked His disciples, saying: Whom do men say that the Son of man is? But they said: Some, John the Baptist, and other some, Elias, and others, Jeremias, or one of the prophets. Jesus saith to them: But whom do you say that I am? Simon Peter answered: Thou art Christ, the Son of the living God. And Jesus answering, said to him: Blessed art thou, Simon Bar-Jona, because flesh and blood hath not revealed it to thee, but My Father Who is in Heaven: and I say to thee, that thou art Peter, and upon this rock I will build My Church, and the gates of hell shall not prevail against it; and to thee I will give the keys of the kingdom of Heaven; and whatsoever thou shalt bind upon earth, it shall be bound also in Heaven; and whatsoever thou shall loose on earth, it shall be loosed also in Heaven.
Behold I have given My words in thy mouth: lo, I have set thee this day over the nations, and over the kingdoms, to waste and to destroy, and to build and to plant. Allelúia.
In Thy loving kindness, we beseech Thee, O Lord, be moved by the offering of our gifts and enlighten Thy Church: that Thy flock may prosper everywhere and the Shepherds, under Thy direction, may be pleasing to Thy Name. Through our Lord.
Thou art Peter, and upon this Rock I will build My Church. Alleluia.
Since Thy Church has been nourished by the sacred repast, govern her in Thy clemency, we beseech Thee, O Lord, so that under the guidance of Thy mighty rule she may enjoy greater freedom and abiding integrity of religion. Through our Lord.