Man made temples and traditions that keep the powerful in power on earth are meaningless if they do not follow God’s rules.
Jesus shows the Pharisees they cannot contain his power, or when it should be exercised purely by following their rules. They don’t just deny his power, but activity plot how they can hurt Jesus to stop him undermining their own earthly power.
Jesus teaches us what we do is more important than what day we do it on. He also encourages us to take action in adversity, when our true colors will shine through.