Technicalities in the Bible

Matthew 12:2 But when the Pharisees saw it, they said unto him, Behold, thy disciples do that which is not lawful to do upon the sabbath day.
Matthew 12:10 And, behold, there was a man which had his hand withered. And they asked him, saying, Is it lawful to heal on the sabbath days? that they might accuse him.
Luke 6:2 And certain of the Pharisees said unto them, Why do ye that which is not lawful to do on the sabbath days?
Luke 6:7 And the scribes and Pharisees watched him, whether he would heal on the sabbath day; that they might find an accusation against him.