One Sabbath he was going through the grainfields, and as they made their way, his disciples began to pluck heads of grain. And the Pharisees were saying 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 was in need and was hungry, he and those who were with him: how he entered the house of God, in the time of Abiathar the high priest, and ate the bread of the Presence, which it is not lawful for any but the priests to eat, and also gave it to those who were with him?” And he said to them, “The Sabbath was made for man, not man for the Sabbath. So the Son of Man is lord even of the Sabbath.” —Mark 2: 25-26
The Pharisees were mere formalists, if there ever were any in the world. They seem to have thought exclusively of the outward part, the husk, the shell, and the ceremonial of religion. They even added to these externals by traditions of their own. Their godliness was made up of washings, and fastings, and peculiarities in dress, and will-worship, while repentance, and faith, and holiness were comparatively overlooked.
The Pharisees would probably have found no fault, if the disciples had been guilty of some offence against the moral law. They would have winked at covetousness, or perjury, or extortions, or excess, because they were sins to which they themselves were inclined. But no sooner did they see an infringement on their man-made traditions about the right way of keeping the Sabbath, than they raised an outcry, and found fault.
Let us watch and pray, lest we fall into the error of the Pharisees.