The Pharisees tried to control behavior through external controls. The way of Jesus was to change hearts from the inside out.
In Matthew 12, we see the contrast between the gentle ways of the Kingdom of God and the harsh judgments of the ways of religion.
This whole process was an opportunity for the first apostles to learn to leave behind their ways of self-reliance and trust their care in the hands of God and others.
The people Jesus hung out with were the people that the religious ones learned to avoid so that they would not be infected by the disease of their sin.
The history of Western Christianity is filled with examples of people who acted in the name of Jesus but the fruit they produced demonstrates values that have nothing to do with the Kingdom of God.