"What makes you think you should tell us anything?" the temple authorities had asked Jesus. He toyed with them some by asking questions they weren't willing to answer. Consequently, he didn't make a flat declaration of his source of authority. (Mark 11:28-33). Instead, he spoke to them in parables.
For example, he told the parable of a man who planted a vineyard, put a fence around it, and dug a pit for the winepress, and built a tower. He didn't oversee the operations of the vineyard himself. Instead, he took a trip and hired some workers to take care of it. They didn't do the job the way that had been intended. When the owner sent a steward to collect from the tenants his share, instead of complying with their agreement, they beat up the steward and sent him away empty handed.
Remember Jesus is talking to the persons who were responsible for the operations of the temple. Is he reminding them whose temple it is? Of whether they are discharging their responsibilities to the Lord as they should? Look back at Isaiah 11: Have they cared for the needy with righteousness? Have they shown righteousness and faithfulness to the will of the Lord?