Introit: John xxi. 15-17

    If thou lovest Me, Simon Peter, feed My lambs, feed My sheep. Ps. I will extol Thee, O Lord, for Thou hast upheld me; and hast not made my enemies to rejoice over me. ℣. Glory be. If thou lovest...

Collect

    O God, who didst bestow upon the soul of Thy servant Gregory the rewards of eternal happiness; mercifully grant, that we, who are oppressed by the weight of our sins, may be relieved through his intercession. Through our Lord.

Commemoration of the Feria:

Collect

    Graciously look down, O Lord, we beseech Thee, upon the devotion of Thy people, that they who are mortified in body by abstinence, may be refreshed in mind through the fruit of good works. Through our Lord.

Epistle: 1 Peter v. 1-4, 10-11

    Lesson from the First Epistle of St. Peter. Dearly beloved, the ancients 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 never fading 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.

Gradual: Psalms cvi. 32, 31

    Let them exalt him in 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.

Tract: Psalms xxxix. 10-11

    I have declared Thy justice in a great church. Lo, I will not restrain my lips. O Lord, Thou knowest it. ℣. I have not hid Thy justice within my heart: I have declared Thy truth and Thy salvation. ℣. I have not concealed Thy mercy and Thy truth from a great council.

Gospel: Matthew xvi. 13-19

    + Continuation of the Gospel of St. Matthew. At that time, Jesus came into the quarters of Caesarea 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, and said: 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 I will give to thee the keys of the kingdom of heaven; and whatsoever thou shalt bind upon earth, it shall be bound also in heaven; and whatsoever thou shalt loose on earth, it shall be loosed also in heaven.

Offertory: Jeremias i. 9-10

    Behold I have given My words in thy mouth; lo, I have set thee over the nations and over kingdoms, to root up and to pull down, and to build and to plant.

Secret

    Vouchsafe, O Lord, we beseech Thee, that through the intercession of blessed Gregory, this sacrifice may be profitable to us; by the offering of which Thou didst wash away the sins of the whole world. Through our Lord.

Commemoration of the Feria:

Secret

    We offer to Thee, O Lord, sacrifices of propitiation; that Thou mayest mercifully forgive us our sins, and direct our inconstant hearts. Through our Lord.

Communion: Matthew xvi. 18

    Thou art Peter, and upon this rock I will build My Church.

Postcommunion

    O God, who didst make the blessed pontiff Gregory equal in merits to Thy saints, grant in Thy mercy that we who keep his memory by his festival, may likewise imitate the example of his life. Through our Lord.

Commemoration of the Feria:

Postcommunion

    By the reception of Thy sacrament, O Lord, may we be both cleansed from our hidden sins and delivered from the snares of enemies. Through our Lord.

Last Gospel of the Feria:

Gospel: Matthew xii. 38-50

    At that time some of the scribes and pharisees answered Jesus, saying: Master, we would see a sign from Thee. Who answering said to them: An evil and adulterous generation seeketh a sign: and a sign shall not be given it, but the sign of Jonas the prophet. For as Jonas was in the whale's belly three days and three nights: so shall the Son of Man be in the heart of the earth three days and three nights. The men of Ninive shall rise in judgment with this generation, and shall condemn it: because they did penance at the preaching of Jonas. And behold a greater than Jonas here. The queen of the south shall rise in judgment with this generation, and shall condemn it: because she came from the ends of the earth to hear the wisdom of Solomon, and behold a greater than Solomon here. And when an unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and findeth none. Then he saith: I will return into my house from whence I came out. And coming he findeth it empty, swept and garnished. Then he goeth, and taketh with him seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is made worse than the first. So shall it be also to this wicked generation. As He was yet speaking to the multitudes, behold His mother and His brethren stood without, seeking to speak to Him. And one said unto Him: Behold Thy mother and Thy brethren stand without, seeking Thee. But He answering him that told Him, said: Who is My mother and who are My brethren? And stretching forth His hands towards His disciples, He said: Behold My mother and My brethren. For whosoever shall do the will of My Father that is in heaven, he is My brother, and sister, and mother.

+ Taken from St. Andrew Daily Missal, by Dom Gaspar Lefebvre, O.S.B., Imprimi Potest 11-18-1945 P. Joannes Delacroix, O.S.B., Imprimatur 11-22-1945 Joseph Van Der Meersch