Luke 6:1-3

Now it happened that Jesus was passing through some grainfields on a Sabbath, and His disciples were picking the heads of grain, rubbing them in their hands, and eating them.

But some of the Pharisees said, “Why are you doing what is not lawful on the Sabbath?”

And Jesus, answering them, said, “Have you not even read what David did when he was hungry, he and those who were with him,