When Jesus entered the temple, he was outraged by the commercialism of the temple area. It had the surface appearance of supporting worship, but was really being driven by profit. The Old Testament Law tells about sacrifices that were to be made at the temple. Bulls, lambs, and doves were all sacrificed at the temple. Anybody who didn’t live in the Jerusalem area would need to buy an animal for sacrifice. The Law also allowed a monetary offering in the place of some sacrifices.