Mark 2 - NRSV

One sabbath he was going through the grainfields; and as they made their way his disciples began to pluck heads of grain. The Pharisees said to him, “Look, why are they doing what is not lawful on the sabbath?” And he said to them, “Have you never read what David did when he and his companions were hungry and in need of food? He entered the house of God, when Abiathar was high priest, and ate the bread of the Presence, which it is not lawful for any but the priests to eat, and he gave some to his companions.” Then he said to them, “The sabbath was made for humankind, and not humankind for the sabbath; so the Son of Man is lord even of the sabbath.”
Mark 2:23-28 sabbath bread