Jesus expelled those who were buying and selling goods in the Temple, and taught that the Temple was to be a place of prayer. These actions angered the priests and scribes who, then, looked for a way to kill Jesus.

Mark 11:15-19

15 Jesus and his disciples went back to Jerusalem. He entered the Temple courtyard. He saw people who were selling and buying animals for sacrifices. They were spoiling the place of worship. He chased those people from the Temple courtyard. He also overturned the tables of those who were giving Temple tax money in exchange for Roman coins. He overturned the seats of the men who were selling doves for sacrifices, 16 and he would not allow anyone who was carrying anything to sell to go through the Temple area. 17 Then as he taught those people, he said to them, “It is written {One of the prophets wrote} in the Scriptures that God said, ‘I want my house to be called {people to call my house} a house where people from all nations may pray’, but you bandits have made it like a cave where you can hide! ◄You know that!/Do you not know that?► [RHQ]” 18 The chief priests and the men who taught the Jewish laws later heard about what he had done. So they planned how they might kill him, but they knew that it would be difficult, because they realized that the crowd was amazed at what he was teaching and they feared that the people would soon decide that Jesus had more authority over the Temple than they did (OR, feared what the people would do if they tried to arrest Jesus). 19 That evening, Jesus and his disciples left the city and again slept in Bethany.