Bede the Venerable

Those however, who came from a distance, being unable to bring with them the animals required for sacrifice, brought the money instead. For their convenience the Scribes and Pharisees ordered animals to be sold in the temple, in order that, when the people had bought and offered them afterwards, they might sell them again, and thus make great profits. And changers of money sitting; changers of money sat at the table to supply change to buyers and sellers. But our Lord disapproving of any worldly business in His house, especially one of so questionable a kind, drove out all engaged in it.