Mark 2:23-28
“It happened that he was going on the Sabbath day through the grain fields, and as they went, his disciples began to pluck the heads of grain. The Pharisees said to him, “Behold, why do they on the Sabbath day that which is not lawful?” He said to them, “Did you never read what David did, when he had need, and was hungry—he, and those who were with him; how he entered into the house of God when Abiathar was high priest, and ate the show bread, which is not lawful to eat except for the priests, and gave also to those who were with him?” He said to them, “The Sabbath was made for man, and not man for the Sabbath. Therefore the Son of Man is lord even of the Sabbath.””
This passage from Mark's Gospel describes an encounter between Jesus and the Pharisees. Jesus and his disciples are passing through grain fields on the Sabbath, and the disciples pick some grain to eat. The Pharisees observe this and challenge Jesus, leading to a discussion about the purpose and interpretation of the Sabbath law.
When does observing a rule or tradition begin to overshadow its original purpose?