Today's gospel is the story about Jesus and his disciples walking through the corn fields. Jesus and his followers pick ears of corn to eat. The Pharisees object, saying this is not allowed on the Sabbath.
Jesus refers to an incident in the Old Testament where David went into the temple and ate the temple bread when his men were hungry. The needs of life come before the Sabbath was Jesus' message.
Then Jesus went on to make another claim: the Son of Man is master of the Sabbath.
The Pharisees knew exactly what Jesus was saying: he had the authority to over rule their understanding of the Law. He was putting himself above them. In fact, he was making himself equal with God.
In fairness to the Pharisees, they saw a man walking around claiming to be God. A big claim. For them, nothing had changed to make this claim seem real.
That's like us when we first ask Jesus for help and enter the Christian life. At first all seems the same, but gradually we come to realize that something very fundamental has changed in our world. There is a new authority, a new order and we come to see it ever more fully as we progress in the Christian life.
That's what happened to the Pharisees over the next couple of years; but some could accept and some rejected this new life. Same as today really!