Pius, a native of Aquileia, was elected pope c. 140. He presided over the council that excommunicated Marcion in 144; Pius also combatted gnosticism. He is supposed to have been the brother of the Shepherd of Hermas and to have known Justin Martyr.
It is stated in the 2nd century Muratorian Canon, and in the Liberian Catalogue, that he was the brother of Hermas, author of the text known as The Shepherd of Hermas. The writer of the later text identifies himself as a former slave. This has led to speculation that both Hermas and Pius were freedmen.
St Pius I governed the Church in the middle of the 2nd century during the reigns of the Emperors Antoninus Pius and Marcus Aurelius. He was the ninth successor of Saint Peter. He decreed that Easter should only be kept on a Sunday. Although being credited with ordering the publication of the Liber Pontificalis, compilation of that document was not started before the beginning of the 6th century. He is said to have built one of the oldest churches in Rome, Santa Pudenziana.
Pius died c. 154 and is first mentioned as a martyr in the IX Century.
INTROIT Ecclesiasticus 45: 30
The Lord made to him a covenant of peace, and made him a prince: that the dignity of priesthood should be to him for ever. (Ps. 131: 1) O Lord, remember David: and all his meekness. 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, The Lord made to him a covenant of peace…
Be pleased to watch over thy flock, eternal Shepherd, and keep it under thy continual protection, through thy martyr and supreme pontiff, blessed Pius whom thou didst establish as chief shepherd of the whole Church. Through Jesus Christ our Lord, Who livest and reignest, with God the Father, in the unity of the Holy Ghost, God, Forever and ever.
Collect of the Souls
From all perils of soul and body defend us, O Lord, we beseech thee, and by the intercession of blessed and gloriosus ever Virgin Mary, Mother of God, of blessed Joseph, of thy blessed apostles Peter and Paul, and of blessed N. and all the Saints, graciously grant us safety and peace that all adversities and errors being overcome, thy Church may serve thee in security and freedom
of the Blessed Virgin Mary
Grant, we beseech thee, O Lord God, unto all thy servants, that they may remain continually in the enjoyment of soundness both of mind and body, and by the glorious intercession of the Blessed Mary, always a Virgin, may be delivered from present sadness, and enter into the joy of thine eternal gladness. Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. R. Amen.
EPISTLE James 1:12-18
Lesson from the Epistle of blessed James. Blessed is the man that endureth temptation: for when he is tried, he shall receive the crown of life, which the Lord hath promised to them that love him. Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man: But every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death. Do not err, my beloved brethren. Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning. Of his own will begat he us with the word of truth, that we should be a kind of first-fruits of his creatures.
GRADUAL/ALLELUIA Psalm 88:21-23
The man I have found is my servant David, on him my consecrating oil has been poured my hand shall strengthen him, my arm shall give him courage. V. No enemy shall have his way with him, no emissary of wickedness shall have power to injure him. Alleluia, allelluia. v. Ps 109:4 Thou art a priest forever in the line of Melchisedech. Alleluia.
GOSPEL Luke 14:26-33
At this time, Jesus said to the multitude: If any man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple. And whosoever doth not bear his cross, and come after me, cannot be my disciple. For which of you, intending to build a tower, sitteth not down first, and counteth the cost, whether he have sufficient to finish it? Lest haply, after he hath laid the foundation, and is not able to finish it, all that behold it begin to mock him, Saying, This man began to build, and was not able to finish. Or what king, going to make war against another king, sitteth not down first, and consulteth whether he be able with ten thousand to meet him that cometh against him with twenty thousand? Or else, while the other is yet a great way off, he sendeth an ambassage, and desireth conditions of peace. So likewise, whosoever he be of you that forsaketh not all that he hath, he cannot be my disciple.
OFFERTORY ANTIPHON Psalm 88:25
My faithfulness and mercy shall go with him: as my champion he shall rise to greatness.
We have offered thee our gifts, and now we pray thee, Lord, graciously to enlighten thy Church, so that everywhere thy flock may prosper and its pastors, under thy guidance, be truly pleasing in thy sight. 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.
Of the souls
Hear us, O God, our salvation that through the power of this Sacrament thou mayest defend us from all enemies of soul and body and bestow upon us grace here and glory hereafter.
of the Blessed Virgin Mary
Through thy mercy, O Lord, and the intercession of blessed Mary ever Virgin, may this oblation obtain for us prosperity and peace both now and forever. Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. R. Amen.
PREFACE of the Apostles
It it truly meet and just, right and for our salvation, to entreat Thee humbly, O Lord, that Thou wouldst 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 Archangels, with Thrones and Dominations, and with all the hosts of the heavenly army, we sing the hymn of Thy glory, evermore saying:
COMMUNION ANTIPHON PSalm 88:36-38
Once for all I have pledged my inviolable word, his posterity shall continue forever; his royalty too, shall last on in my presence like the sun, like the moon’s eternal orb; the witness of heaven is unalterable.
Increase within thy Church, we pray thee, Lord, the spirit of grace which thou has bestowed, so that, through the prayers of thy martyr and supreme pontiff blessed Pius, the flock may be not wanting in obedience to their shepherd, nor the shepherd in watchfulness over his flock. 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.
Of the souls
May the offering of this divine Sacrament cleanse and protect us, O Lord we beseech thee, and by the intercession of the Blessed Virgin Mary, Mother of God, of blessed Joseph, of thy blessed Apostles Peter and Paul, and of blessed N. and all the Saints, may it purify us from all sin, and free us from all adversity.
of the Blessed Virgin Mary
Grant, O Lord, that we, who had partaken of the aids of salvation, may be everywhere protected by the patronage of blessed Mary ever Virgin, in whose honor we have offered these gifts of thy majesty. Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. R. Amen.