Please read the passage before the commentary.
I wonder if the opposition to the healing of the man with the withered hand came more from who was doing the healing and less from the fact that it took place on a Sabbath. When Jesus healed on a Sabbath, he was not so much doing something on a Sabbath as pronouncing himself as being in charge of the Sabbath.
Genesis tells us that God rested on the Sabbath from all the work God had done (Genesis 2:1-3), God continued to find all creation good and loved all God had made. Jesus continued to show this love and care for creation; he healed the man’s hand and healed the man himself.
At the time of the writing of the gospel, the Pharisees had grown to dislike Christian, possibly because Jews who had come to believe in Jesus had refused to help the Jewish community defeat the Roman army that eventually sacked Jerusalem in the year 70.
Already in chapter three, in the first quarter of the Gospel according to Mark, we hear that the authorities are plotting to kill Jesus. We know that Jesus died for us and rose from the dead for us, but do we understand that we must also die and so rise with him? The work we to do, the tasks we have in this life are like those Jesus did. We are his body, his presence in the world today. We must take possession of the Sabbaths in giving life and healing to creation, planet and people, as Jesus did in fulfilling the work of the Father in loving and caring for all God has built and made.