Luke 6:3-5

3And Jesus answering them said, Have ye not read so much as this, what David did, when himself was hungry, and they who were with him;

4How he went into the house of God, and took and ate the show bread, and gave also to them that were with him; which it is not lawful to eat but for the priests alone?

5And he said to them, That the Son of man is Lord also of the sabbath.