Why are you doing something that is forbidden on the sabbath day?
One sabbath Jesus happened to be taking a walk through the cornfields, and his disciples were picking ears of corn, rubbing them in their hands and eating them. Some of the Pharisees said., ‘Why are you doing something that is forbidden on the sabbath day?‘ Jesus answered them, ‘So. you have not read what David did when he and his followers were hungry “- how he went into the House of God, took the loaves of offering and ate them and gave them to his followers, loaves which only the priests are allowed to eat?’
And he said to them, ‘The Son of Man is master of the sabbath.’
The following is a commentary on Jesus’ approach to the Sabbath from YOUCAT (#363-364) – the Youth Catechism.
How does Jesus deal with the Sabbath?
Jesus observes the Sabbath, but at the same time he deals with it very liberally, as one who has complete command over it: “The sabbath was made for man, not man for the sabbath” (Mk 2:27).
The fact that Jesus claims the right to heal on the Sabbath and to interpret the Sabbath laws mercifully poses a dilemma for his Jewish contemporaries: Either Jesus is the Messiah sent by God, which makes him “Lord even of the sabbath” [see above], or else he is merely a man, in which case his actions on the Sabbath are a sin against the Law.
Why do Christians replace the Sabbath with Sunday?
Christians replaced the celebration of the Sabbath with the celebration of Sunday because Jesus Christ rose from the dead on a Sunday. The “Lord’s Day”, however, does include elements of the Sabbath.
The Christian Sunday has three essential elements: (1) It recalls the creation of the world and communicates the festive splendor of God’s goodness to the passage of time. (2) It recalls the “eighth day of creation”, when the world was made new in Christ (thus a prayer from the Easter Vigil says: “You have wonderfully created man and even more wonderfully restored him.”). (3) It includes the theme of rest, not just to sanctify the interruption of work, but to point even now toward man’s eternal rest in God.