(Phil. 4:4-6) Rejoice in the Lord always: again I say, rejoice. Let your modesty be known to all men: for the Lord is nigh. Be in nothing solicitous: but in everything by prayer let your petitions be made known to God. Psalm (84: 2). Give ear, O Thou that rulest Israel: Thou that leadest Joseph like a sheep. Gloria Patri. Lesson of the Epistle of Saint Paul the Apostle to the Philippians (4: 4-7) Nothing is more just than that we rejoice in the Lord. Both the prophet and the apostle excite us to desire the Saviour, both of them promise us peace. Therefore, let us not be solicitous: the Lord is nigh; nigh to His Church, and nigh to each of our souls. Who can be near so burning a fire, and yet be cold? Do we not feel that He is coming to us, in spite of all obstacles? He will let nothing be a barrier between Himself and us, neither His own infinite high majesty, nor our exceeding lowliness, nor our many sins. Yet a little while, and He will be with us. Let us go out to meet Him by these prayers and supplications, and thanksgiving which the apostle recommends to us. Let our zeal to unite ourselves with our holy mother the Church become more than ever fervent: now every day her prayers will increase in intense earnestness, and her longings after Him, who is her light and her love, will grow more ardent. First let us say together with her: (Ps. 79: 2-3) Thou, O Lord, that sits upon the Cherubim, stir up Thy might and come. ℣. Give ear, O Thou that rules Israel: that leads Joseph like a sheep. The Sequel of the holy Gospel according to saint John (1:19-28). There hath stood One in the midst of you, whom you know not, says Saint John the Baptist to them that were sent by the Jews. So that our Lord may be near, He may even have come, and yet by some be not known! This Lamb of God is the holy Precursor’s consolation: he considers it a singular privilege to be but the voice, which cries out to men to prepare the way of the Redeemer. In this, St. John is the type of the Church, and of all such as seek Jesus. St. John is full of joy because the Saviour has come: but the men around him are as indifferent as though they neither expected nor wanted a Saviour. This is the third week of Advent; and are all hearts excited by the great tidings told them by the Church, that the Messias is near at hand? They that love Him not as their Saviour, do they fear Him as their Judge? Are the crooked ways being made straight, and the hills being brought low? Are Christians seriously engaged in removing from their hearts the love of riches and the love of sensual pleasures? There is no time to lose: the Lord is nigh! If these lines should come under the eye of any of those Christians who are in this state of sinful indifference, we would conjure them to shake off their lethargy, and render themselves worthy of the visit of the divine Infant: such a visit will bring them the greatest consolation here, and give them confidence hereafter, when our Lord will come to judge all mankind. Send Thy grace, O Jesus, still more plentifully into their hearts; ‘compel them to go in,’ and permit not that it be said of the children of the Church, as St. John said of the Synagogue: There standeth in the midst of you One, whom you know not. 1962 Roman MissalThird Sunday in Advent - Gaudéte Sunday - Testimony of Saint John the Baptist

Reflexions on the Liturgy of the Day
Testimony of Saint John the Baptist
Today, again, the Church is full of joy, and the joy is greater than it was. It is true that her Lord has not come; but she feels that He is nearer than before, and therefore she thinks it just to lessen some what the austerity of this penitential season by the innocent cheerfulness of her sacred rites. And first, this Sunday has had the name of Gaudete given to it, from the first word of the Introit; it also is honoured with those impressive exceptions which belong to the fourth Sunday of Lent, called Laetare. The organ is played at the Mass; the vestments are rose-colour. How admirable this condescension of the Church, wherewith she so beautifully blends together the unalterable strictness of the dogmas of faith and the graceful poetry of the formulae of her liturgy. Let us enter into her spirit, and be glad on this third Sunday of her Advent, because our Lord is now so near unto us. Tomorrow we will resume our attitude of servants mourning for the absence of their Lord and waiting for Him; for every delay, however short, is painful and makes love sad. Liturgy of the Mass
Introit
Collect
In the Collect, the Church asks for the grace of that divine visit, which dispels darkness and brings light. Darkness produces fear in the soul; whereas, light gives courage and joy to the heart.
Incline Thine ear, we beseech Thee, O Lord, to our petitions: and, by the grace of Thy visitation, enlighten the darkness of our minds. Who lives and reigns, with God the Father, in the unity of the Holy Spirit, God, forever and ever.Epistle
Brethren, Rejoice in the Lord always: again I say, rejoice. Let your modesty be known to all men: The Lord is nigh. Be nothing solicitous: but in everything, by prayer and supplication, with thanksgiving, let your petitions be made known to God. And the peace of God, which surpasses all understanding, keep your hearts and minds in Christ Jesus our Lord.Reflexion on the Epistle
Gradual
Alleluia, Alleluia. (Ps. 121: 1) ℣. Stir up, O Lord, Thy might, and come to save us. Alleluia.Gospel
At that time the Jews sent from Jerusalem priests and levites to John, to ask him: Who art thou? And he confessed: I am not the Christ. And they asked him: What then? Art thou Elias? And he said: I am not. Art thou the Prophet? And he answered: No. They said therefore unto him: Who art thou, that we may give an answer to them that sent us? He said: I am the voice of one crying in the wilderness, Make straight the way of the Lord, as said the Prophet Isaias. And they that were sent were of the Pharisees. And they asked him, and said to him: Why then dost thou baptize, if thou be not Christ, nor Elias, nor the Prophet? John answered them, saying: I baptize with water: but there hath stood one in the midst of you, whom you know not. The same is He that shall come after me, who is preferred before me: the latchet of whose shoe I am not worthy to loose. These things were done in Bethania, beyond the Jordan, where John was baptizing.Reflexion on the Gospel
The Liturgical Year, authored by Dom Prosper Gueranger (1841-1875)