Bede the Venerable
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.
(ubi sup.) Well indeed in the shape of a dove did the Holy Ghost come down, for it is an animal of great simplicity, and far removed from the malice of gall, that in a figure He might shew us that He looks out for simple hearts, and deigns not to dwell in the minds of the wicked.