Origen — as excerpted in the Catena Aurea on Matthew 21:10-16

“Mystically; The Temple of God is the Church of Christ, wherein are many, who live not, as they ought, spiritually, but after the flesh; and that house of prayer which is built of living stones they make by their actions to be a den of thieves. But if we must express more closely the three kinds of men cast out of the Temple, we may say thus. Whosoever among a Christian people spend their time in nothing else but buying and selling, continuing but little in prayers or in other right actions, these are the buyers and sellers in the Temple of God. Deacons who do not lay out well the funds of their Churches, but grow rich out of the poor man’s portion, these are the money-changers whose tables Christ overturns. But that the deacons preside over the tables of Church money, we learn from the Act of the Apostles (Acts 6:2.) Bishops who commit Churches to those they ought not, are they that sell the doves, that is, the grace of the Holy Spirit, whose seats Christ overturns.”