Mark 1:11

(de Cons. Ev. ii. 14) Wherefore Matthew relates that the voice said, This is my beloved Son; for he wished to show that the words, This is My Son, were in fact said, that thus the persons who heard it might know that He, and not another, was the Son of God. But, if you ask, which of these two sounded forth in that voice, take which you will, only remember, that the Evangelists, though not relating the same form of speaking, relate the same meaning. And that God delighted Himself in His Son, we are reminded in these words, In thee I am well pleased.

(ubi sup.) Now the Dove sat on the head of Jesus, lest any one should think that the voice of the Father was addressed to John and not to Christ. And well did he add, abiding on Him; for this is peculiar to Christ, that the Holy Ghost once filling Him should never leave Him. For sometimes to His faithful disciples the grace of the Spirit is conferred for signs of virtue, and for the working of miracles, sometimes it is taken away; though for the working of piety and righteousness, for the preservation of love to God and to one's neighbour, the grace of the Spirit is never absent. But the voice of the Father showed, that He Himself, who came to John to be baptized with the others, was the very Son of God, willing to baptize with the Holy Spirit, whence there follows, And there came a voice from heaven, Thou art my beloved Son, in thee I am well pleased. Not that this informed the Son Himself of a thing of which He was ignorant, but it shows to us what we ought to believe.

(ubi sup.) The same voice has taught us, that we also, by the water of cleansing, and by the Spirit of sanctification, may be made the sons of God. The mystery of the Trinity also is shown forth in the baptism; the Son is baptized, the Spirit comes down in the shape of a dove, the voice of the Father bearing witness to the Son is heard.

Again, the Holy Spirit came down in the shape of a dove, because in the Canticles it is sung of the Church: "My bride, my love, my beloved, my dove." "Bride" in the Patriarchs, "love" in the Prophets, "near of kin" in Joseph and Mary, "beloved" in John the Baptist, "dove" in Christ and His Apostles: to whom it is said, "Be ye wise as serpents, and harmless as doves." Morally also it may be interpreted; we also, drawn aside from the fleeting world by the smell and purity of flowers, run with the young maidens after the bridegroom, and are washed in the sacrament of baptism, from the two fountains of the love of God, and of our neighbour, by the grace of remission, and mounting up by hope gaze upon heavenly mysteries with the eyes of a clean heart. Then we receive in a contrite and lowly spirit, with simplicity of heart, the Holy Spirit, who comes down to the meek, and abides in us, by the never-failing charity. And the voice of the Lord from heaven is directed to us the beloved of God; "Blessed are the peacemakers, for they shall be called the sons of God;" and then the Father, with the Son and the Holy Spirit, is well-pleased with us, when we are made one spirit with God.

Morally also it may be interpreted; we also, drawn aside from the fleeting world by the smell and purity of flowers, run with the young maidens after the bridegroom, (v. Cant. 1:2. 3.) and are washed in the sacrament of baptism, from the two fountains of the love of God, and of our neighbour, by the grace of remission, and mounting up by hope gaze upon heavenly mysteries with the eyes of a clean heart. Then we receive in a contrite and lowly spirit, with simplicity of heart, the Holy Spirit, who comes down to the meek, and abides in us, by a never-failing charity. And the voice of the Lord from heaven is directed to us the beloved of God; Blessed are the peacemakers, for they shall be called the sons of God; (Matt. 5:9) and then the Father, with the Son and the Holy Spirit, is well-pleased with us, when we are made one spirit with God.