Pseudo-Jerome
Catena Aurea · Markusevangelium 1
And it came to pass in those days, that Jesus came from Nazareth of Galilee, and was baptized of John in Jordan. And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him: And there came a voice from heaven, saying, Thou art my beloved Son, in whom I am well pleased.
Again, the Holy Ghost came down in the shape of a dove, because in the Canticles it is sung of the Church: (Cant. passim.) 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. (Mat. 10:16)