All you need. Nothing you don't.
The Temple moneychangers and merchandisers, more than anyone else on record, angered our humble Saviour. They and everyone else, no doubt, saw their “ministry” as a very useful one. Jews from all over the world visited the Temple and inevitably there were currency exchange issues which frequently emerged.
Likewise, those selling the sacrificial animals offered a very real service in the eyes of most. Otherwise, they would have been removed prior to Jesus.
What did our Lord detect in their harmless looking “ministries” which enraged him so?
What if they had rendered their services on a voluntary, non-profit basis?
What can we learn from this holy outburst of righteous anger?
When it was almost time for the Jewish Passover, Jesus went up to Jerusalem. In the temple courts he found men selling cattle, sheep and doves, and others sitting at tables exchanging money. So he made a whip out of cords, and drove all from the temple area, both sheep and cattle; he scattered the coins of the money changers and overturned their tables. To those who sold doves he said, “Get these out of here! How dare you turn my Father’s house into a market!” John 2:13-16