Bede the Venerable
Catena Aurea · Markusevangelium 11
And they come to Jerusalem: and Jesus went into the temple, and began to cast out them that sold and bought in the temple, and overthrew the tables of the moneychangers, and the seats of them that sold doves; And would not suffer that any man should carry any vessel through the temple. And he taught, saying unto them, Is it not written, My house shall be called of all nations the house of prayer? but ye have made it a den of thieves. And the Scribes and Chief Priests heard it, and sought how they might destroy him: for they feared him, because all the people was astonished at his doctrine.
(ubi sup.) Because the Holy Spirit appeared over the Lord in the shape of a dove, the gifts of the Holy Spirit are fitly pointed out under the name of doves. The Dove therefore is sold, when the laying on of hands by which the Holy Spirit is received is sold for a price. Again, He overturns the seats of them who sell doves, because they who sell spiritual grace, are deprived of their priesthood, either before men, or in the eyes of God.