Luke 6:5 (KJV)

And Jesus answering them said, Have ye not read so much as this, what David did, when himself was an hungred, and they which were with him;

How he went into the house of God, and did take and eat the shewbread, and gave also to them that were with him; which it is not lawful to eat but for the priests alone?

And he said unto them, That the Son of man is Lord also of the sabbath.

And it came to pass also on another sabbath, that he entered into the synagogue and taught: and there was a man whose right hand was withered.

And the scribes and Pharisees watched him, whether he would heal on the sabbath day; that they might find an accusation against him.