Some people believe so strongly in the rules of Christian morality, that they seek rather guidance from this rules than from God Himself. Likewise in the synagogue where Jesus was teaching. It was Sabbath. That is a day for God, a day on which He receives the honor He is entitled to.
While Jesus was speaking, He saw a woman who had been crippled by a spirit. Since medical science has discovered more about the mysteries of the human body, it has become foolish for modern people to still speak about ‘being crippled by a spirit’. This happens when human wisdom accumulates. Since we know that lightning is an electrostatic discharge, we surely do not believe anymore that God speaks in the thunder?
But Jesus - Son of God, Creator of all that is, including the human body - looked at this woman and pitied her, because Satan had kept her bound for eighteen long years by a crippling spirit. Would medical science not be much more beneficial if the wise medics would consult God more, rather than only their learned books? Jesus looked at this woman who was bent over and could not straighten up at all, and He told her, ‘Woman, you are set free from your infirmity.’
How many children of Abraham are - and remain - bound by spirits of darkness, because medication can cure the physical ailments, but not remove the evil spirits who only flee upon the powerful word of Jesus.
How we still need to learn speaking and acting in such dependence upon God that His power is made perfect in our weakness.