Mark 3:4 And He said to them, "Is it lawful on the Sabbath to do good or to do harm, to save a life or to kill?" But they kept silent.
Vs 5 And after looking around at them with anger, grieved at their hardness of heart, He said to the man, "Stretch out you hand." And he stretched it out, and his hand was restored.
In some circles, people are very concerned about grieving the Holy Spirit. But I've never really heard much about grieving Jesus. Yet here in verse 5 of Mark 3, we see that Jesus is both angry and grieved. Why? Because of the hardness of their hearts. The religious people of the day were more concerned with the religious form of keeping rules. And worse than this, the Pharisees were watching Him, to try to catch Him at breaking "God's rules" in order to do good. They were 'rule keepers'. They were not good. They called the good works that Jesus did 'Evil' and could not discern the evil in their own hearts.
They were the religious leaders of the day, but according to Hebrews 5:14 they were immature.
Hebrews 5:14 But solid food is for the mature, who because of practice have their senses trained to discern good and evil.