Stubborn.  So set in their ways they can’t listen to reason. Know anybody like that?  Jesus did and they made Him angry.  Angry, but also sad they could not loosen up.  They were like seized pistons in what could have been the powerful engine of life.  Here’s what happened:

Again he entered the synagogue, and a man was there with a withered hand. And they watched Jesus, to see whether he would heal him on the Sabbath, so that they might accuse him. And he said to the man with the withered hand, “Come here.” And he said to them, “Is it lawful on the Sabbath to do good or to do harm, to save life or to kill?” But they were silent. And he looked around at them with anger, grieved at their hardness of heart, and said to the man, “Stretch out your hand.” He stretched it out, and his hand was restored.
You can’t get in step with Jesus when your heart is hard or stubborn.  You can’t fold your arms, stick out your chin and insist on your own way.  Responsiveness to His rhythms is the key.  Perhaps that heart adjustment seems risky at first.  Like your first time out on the dance floor.  But life is so much more exhilarating when we are not stuck.