Double Feast of Pope Saint Leo the Great, Sovereign Pontiff, Confessor and Doctor of the Church

White Vestments

Missa "Si diligis Me"

        Saint Leo was born in Rome. He embraced the sacred ministry, was made Archdeacon of the Roman Church by Pope Saint Celestine, and under the same Vicar of Christ and Saint Sixtus III, had a large share in governing the Church. On the death of Sixtus, Leo was chosen Pope, and consecrated on September 29, 440 on the feast Saint Michael, amid great joy.

        It was the time of terrible trial which preceded by thirty years the definitive fall of the Roman Empire. Vandals and Huns were wasting the provinces of the empire, and Nestorians, Pelagians, and other heretics wrought still more grievous havoc in souls. While Leo’s zeal was making headway against these perils, there arose the new heresy of Eutyches, who confounded the two natures of Christ. At once the vigilant pastor proclaimed the true doctrine of the Incarnation in his famous “tome”; but fostered by the Byzantine court, the heresy gained a strong hold upon the Eastern monks and bishops. After three years of unceasing toil, Saint Leo brought about its solemn condemnation by the Council of Chalcedon, the Fathers all signing his tome, and exclaiming, “Peter has spoken by Leo.”

        Soon after, Attila with his Huns broke into Italy, and marched through its razed cities upon Rome. Leo went out boldly to meet him, and prevailed on him to turn back. His chieftains were astonished to see the terrible Attila, the “Scourge of God,” fresh from the sack of Aquileia, Milan and Pavia and with the rich prize of Rome within his grasp, turn his great host back to the Danube at the Saint’s word. They asked him why he had acted so strangely. He told them he had seen two venerable personages — who are generally supposed to be Saints Peter and Paul — standing behind Saint Leo; and impressed by this vision, he withdrew. Two years later the city fell a prey to the Vandals, but Leo saved it again from total destruction. He died in 461 after having ruled the Church for a little over twenty years.

        The feast of this great Pope was transferred from the day of his death, November 10, 461 to April 11, the day on which his body was first laid in the tomb under the outer porch of the old St. Peter's. He is called "Great," not only for his learning, but also for his successful government of the Church by overcoming heretics and saving Rome from the invasion of Attila. The magnificent Offices of Advent are attributed to him and certainly several of his compositions are contained in the Leonine Sacramentary.

        By his humility, mildness, and charity this great Pope won the love and reverence of emperors, princes, and people of every rank.

      For more on St. Leo the Great see Defender of Rome and Codifier of Orthodoxy

        We want to thank the Friends of Our Lady of Fatima for expediting these resources of the Propers. Sources: Saint Andrew Daily Missal and the Marian Missal , 1945


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Missa "Si diligis Me"
INTROIT: John 21: 15-17
      Si díligis Me, Simon Petre, pasce agnos meos, pasce oves meas. Allelúja, allelúja. (Ps. 29: 1) Exaltábo te, Dómine, quóniam suscepísti me, nec delectásti inimícos meos super me. v. Gloria Patri et Filio et Spiritui Sancti sicut erat in principio et nunc, et semper, et saecula saeculorum. Amen.
      Repeat Si diligis Me...
      If thou lovest Me, Simon Peter, feed My lambs; feed My sheep. Alleluia, alleluia. (Ps. 29: 1) I will extol Thee, O Lord, for Thou hast upheld me: and hast not made my enemies to rejoice over me. v. Glory be to the Father and to the Son and to the Holy Ghost, as it was in the beginning, is now and ever shall be, world without end. Amen. Repeat If thou lovest Me...
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      COLLECT
      Dominus vobiscum.
      R. Et cum spiritu tuo.

      Oremus. Gregem tuum, Pastor ætérnæ inténde: et per beátum Leonem Summum Pontíficem, perpétua protectióne custódi; quem totíus Ecclésiæ præstitísti esse pastórem. Per Dóminum nostrum Jesum Christum Fílium tuum, qui tecum vivit et regnat in unitáte Spíritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      Second Collect for intercession of the Saints
      Oremus. A cunctis nos, quaesumus, Domine, mentis et corporis defende periculis: et intercedente beata et gloriosa semper Virgine Dei Genitrice Maria, cum beato Joseph, beatis Apostolis Tuis Petro et Paulo, atque beato N. (Here mention the titular saint of the church), et omnibus Sanctis, salutem nobis tribue benignus et pacem, ut destructis adversitatibus et erroribus universis, Ecclesia Tua secura Tibi serviat liberare. Per Dominum nostrum Jesum Christum, Qui Tecum vivit et regnat in unitate Spiritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      The Lord be with you.
      R. And with thy spirit.

      Let us pray. O Eternal Shepherd, do Thou look favorably upon Thy flock, which we beseech Thee to guard and keep for evermore through the Blessed Leo, Supreme Pontiff, whom Thou didst choose to be the chief shepherd of the whole Church. Through our Lord Jesus Christ, Thy Son, Who liveth and reigneth with Thee in the unity of the Holy Ghost, one God
      Forever and ever.
      R.Amen.

      Second Collect for the Intercession of Thy Saints
      Let us pray. Defend us, we beseech Thee, O Lord, from all dangers of mind and body; that through the intercession of the blessed and glorious ever Virgin Mary, Mother of God, together with blessed Joseph, Thy blessed apostles Peter and Paul, and blessed N. (Here mention the titular saint of the church), and all the saints, mercifully grant us safety and peace; that all adversities and errors being overcome, Thy Church may serve Thee in security and freedom. Through Jesus Christ our Lord, Who liveth and reigneth with Thee in the unity of the Holy Ghost, one God
      Forever and ever.
      R.Amen.


      EPISTLE: 1 Peter 5: 1-4, 10-11
        Christ is the model for the Popes. A true Pope directs the Church with love and according to the will of God.
      Lectio libri Petri. Petrus Apostolus Jesu Christi, electis advenis dispersionis Ponti, Galatiæ, Cappadociæ, Asiæ, et Bithyniæ, secundum præscientiam Dei Patris, in sanctificationem Spiritus, in obedientiam, et aspersionem sanguinis Jesu Christi : Gratia vobis, et pax multiplicetur. Benedictus Deus et Pater Domini nostri Jesu Christi, qui secundum misericordiam suam magnam regeneravit nos in spem vivam, per resurrectionem Jesu Christi ex mortuis in hæreditatem incorruptibilem, et incontaminatam, et immarcescibilem, conservatam in Cælis in vobis. De qua salute exquisierunt, atque scrutati sunt prophetæ, qui de futura in vobis gratia prophetaverunt : scrutantes in quod vel quale tempus significaret in eis Spiritus Christi : prænuntians eas quæ in Christo sunt passiones, et posteriores glorias. Deo Gratias.
      Lesson from the First Book of Peter. Dearly beloved, the ancients therefore that are among you, I beseech , who am myself also am 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. Thanks be to God.

      ALLELUIA
      Allelúja, allelúja. (Matthew 16: 18) Tu es Petrus, et super hanc petram ædificábo Ecclésiam meam. Allelúja. (Ps. 44: 17,18) Constítues eos príncipes super omnem terram: mémores erunt nóminis tui, Dómine. Allelúja.
      Alleluia, alleluia. (Matthew 16: 18) Thou art Peter, and upon this rock I will build My Church. Alleluia. (Ps. 44, 17, 18) Thou shalt make them princes over all the earth: they shall remember Thy name throughout all generations. Alleluia.

      GOSPEL:   Matthew 16: 13-19
        Peter’s confession of the Godhead of Christ. He is declared by Our Lord to be the Rock on which the Church rests securely
      Dominus vobiscum.
      R. Et cum spiritu tuo.
      Sequentia sancti Evangelii secundum Matthaeum
      R.Gloria tibi, Domine

      In illo témpore: Venit Jesus in partes Cæsaréæ Philíppi, et interrogábat di-scípulos suos, dicens: "Quem dicunt hómines esse Fílium hóminis?" At illi dixérunt: Álii Joánnem Baptístam, álii autem Elíam, álii vero Jeremíam aut unum ex prophétis. Dicit illis Jesus: "Vos autem quem me esse dícitis?" Respóndens Simon Petrus, dixit: Tu es Christus, Fílius Dei vivi. Respóndens autem Jesus, dìxit ei: "Beátus es, Simon Bar Jona: quia caro et sanguis non revelávit tibi, sed Pater meus, qui in Cœlis est. Et ego dico tibí, quia tu es Petrus, et super hanc petram ædificábo Ecclésiam meam, et portæ ínferi non prævalébunt advérsus eam. Et tibi dabo claves regni cælórum. Et quodcúmque ligáveris super terram, erit ligátum et in cœlis: et quodcúmque sólveris super terram, erit solútum et in Cœlis."
      Laus tibi Christe.

      The Lord be with you.
      R. And with thy spirit.
      The continuation of the holy Gospel according to Matthew.
      R. Glory to Thee, O Lord

      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."
      Praise be to Christ


      OFFERTORY:    Psalm 88: 25
      Dominus vobiscum.
      R. Et cum spiritu tuo.

      Veritas Mea, et misericordia Mea cum ipso: et in nomine Meo exaltabitur cornu ejus.
      The Lord be with you.
      R. And with thy spirit.

      My truth and My mercy shall be with him: and in My name shall his horn be exalted.
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      SECRET
      Oblátis munéribus, quæsumus Dómine, Ecclésiam tuam benífgnus illúmina: ut, et gregis tui profíciat ubíque succéssus, et grati fiant nómini tuo, te gubernànte, pastóres. Per Dominum nostrum Jesum Christum Filium Tuum, Qui Tecum vivit et regnat in unitate Spiritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      Second Secret to implore the Intercession of the Saints
      Exaudi nos, Deus salutaris noster : ut per hujus sacramenti virtutem, a cunctis nos mentis et corporis hostibus tuearis; gratiam tribunes in praesenti, et gloriam in futuro. Per Dominum nostrum Jesum Christum, Qui Tecum vivit et regnat in unitate Spiritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      In Thy loving kindness, we beseech Thee, Lord, be moved by the offering of our gifts and enlighten Thy Church: that Thy flock may prosper everywhere and the shepherds, under Thy guidance, may be rendered acceptable to Thee. Jesus Christ Thy Son our Lord, Who liveth and reigneth with Thee in the unity of the Holy Ghost, one God
      Forever and ever.
      R.Amen.

      Second Secret to implore the Intercession of the Saints
      Graciously hear us, O God our Savior, and by the virtue of this sacrament protect us from all enemies of soul and body, bestowing on us both grace in this life and glory hereafter. Through our Lord Jesus Christ, Who livest and reignest, with God the Father, in the unity of the Holy Ghost, one God
      For ever and ever.
      R. Amen.

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      PREFACE   of the Apostles
      Dominus vobiscum.
      R. Et cum spiritu tuo.
      Sursum corda.
      R.Habemus ad Dominum.
      Gratias agamus Domino Deo nostro.
      R. Dignum et justum est.

      Vere dignum et justum est, aequum et salutare. Te Domine supplicitur exorare, ut gregem tuum pastor aeterne, non deseras: sed per beatos Apostolos tuos continua protectione custodias. Ut iisdem rectoribus gubernetur, quos operis tui vicarious eidem contulisti praesse pastores. Et ideo cum Angelis et Archangelis, cum Thronis et Dominationibus, cumque omni militia caelestis exercitus, hymnum gloriae tuae canimus, sine fine dicentes:
      SANCTUS, SANCTUS, SANCTUS...
      The Lord be with you.
      R. And with thy spirit.
      Lift up your hearts.
      R.We have lifted them up to the Lord.
      Let us give thanks to the Lord our God.
      R. It is meet and just.

      It is truly meet and just, right and for our salvation, to entreat Thee humbly, O Lord, that Thou woulds not desert Thy flock. O everlasting Shepherd; but through Thy blessed Apostles, wouldst keep it under Thy constant protection; that it may be governed by those same rulers, whom as vicars of Thy work, Thou didst set over it to be its pastors. And therefore with Angels and Archangesl, with Thrones and Dominations, and with all the hosts of the heavenly army, we sing the hymn of The glory, evermore saying:
      HOLY, HOLY, HOLY...


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      COMMUNION:   Matthew 16: 18
      Tu es Petrus, et super hanc petram ædificábo Ecclésiam Meam. Allelúja.
      Thou art Peter, and upon this rock I will build My Church. Alleluia.

      POSTCOMMUNION
      Dominus vobiscum.
      R. Et cum spiritu tuo.
      Oremus.
      Refectióne sancta enutrítam gubérna, quàesumus Dómine, tuam placátus Ecclésiam: ut poténti moderatióne dirécta, et increménta libertátis accípiat et in religiónis integritáte persístat. Per Dominum nostrum Jesum Christum, Filium Tuum, Qui Tecum vivit et regnat in unitate Spiritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      Second Postcommunion to implore the Intercession of the Saints
      Oremus. Mundet et muniat nos, quaesumus, Domine, divini Sacramenti munus oblatum : et, intercedente beata Virgine Dei. Genitrice Maria, cum beato Joseph, beatis Apostolis tuis Petro et Paulo, atque beato N. (here mention the titular saint of the church), et omnibus Sanctis; a cunctis nos reddat et perversitatibus expiatos, et adversitatibus expeditos. Per eumdum Dominum nostrum Jesum Christum, Qui Tecum vivit et regnat in unitate Spiritus Sancti, Deus,
      Per omnia saecula saeculorum.
      R. Amen.

      The Lord be with you.
      R. And with thy spirit.
      Let us pray.
      We who have been refreshed by heavenly food and drink, humbly entreat Thee, O our God, that we may be strengthened also by the prayers of him, in whose commemoration we have received them. Through our Lord Jesus Christ, Thy Son, Who liveth and reigneth with Thee in the unity of the Holy Ghost, one God
      For ever and ever.
      R. Amen.

      Second Postcommunion to implore the Intercession of the Saints
      Let us pray. May the oblation of this divine sacrament cleanse and defend us, we beseech Thee, O Lord, and, through the intercession of the blessed Virgin Mary, Mother of God, with blessed Joseph, Thy blessed apostles Peter and Paul, blessed N. (here mention the titular saint of the church), and all the saints, purify us from all our sins and deliver us from all adversity. Through our Lord Jesus Christ, Who livest and reignest, with God the Father, in the unity of the Holy Ghost, one God
      For ever and ever.
      R. Amen.

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