[Moseley]

"That’s partly what the incident at the temple was all about in Matthew 21, when Jesus overturned the tables of money-changers. Some think money-changers were bankers."
I thought it was because Jesus didn't want the sanctity of the temple violated by commerce.

Yes, that, too. But part of the reason the sanctity of the temple was so violated was that the people buying and selling products and changing money in the temple were ripping people off -- similar to a tourist trap. Worshippers traveled a long way to come to worship God at the temple and offer their sacrifices. When they came there, animals to sacrifice were being sold at greatly inflated prices and those coming to worship God were being ripped off.

[thecodont]

Wasn’t it also true that the animal market was in the Court of the Gentiles, and was thus preventing Gentiles from coming to worship in the Temple?

“My house shall be called a house of prayer for all peoples.” — Jesus Christ