Jesus tells the story of the owner of the vineyard to show that his listeners, members of the religious establishment of his time, have missed the point. The story is breathtakingly clear. Those who “get it” have to do away with him. They mock him, deride him and finally kill him.
Who has given Jesus the power to cleanse the temple? Because it’s hard for us to understand life in Jesus’ time, it’s also hard to understand just how fundamental his attack on the moneysellers is. By forgiving sins, Jesus is blasting away at the religious leaders of the day, members of the priestly class.