On Monday, Jesus rode to the temple courts and was disappointed at what He saw. He became angry, driving out those who were buying and selling and overturning the tables of the money changers. This area was to be a place of prayer.
In fact, it was the only area Gentiles were allowed to come and pray. Jesus knew the hearts of the merchants and saw them as thieves. This was actually the 2nd time Jesus cleansed the temple as He did so at the beginning of his ministry as well.