Mark 2 - NKJV

Now it happened that He went through the grainfields on the Sabbath; and as they went His disciples began to pluck the heads of grain. And the Pharisees said to Him, “Look, why do they do what is not lawful on the Sabbath?”
But He said to them, “Have you never read what David did when he was in need and hungry, he and those with him: how he went into the house of God in the days of Abiathar the high priest, and ate the showbread, which is not lawful to eat except for the priests, and also gave some to those who were with him?”
And He said to them, “The Sabbath was made for man, and not man for the Sabbath. Therefore the Son of Man is also Lord of the Sabbath.”
Mark 2:23-28 sabbath bread