Mark 2:27
Then he said to them, “The Sabbath was made for man, not man for the Sabbath.

The Messiah came and explained certain sides about the Law of Moses, that the rulers in Israel had misunderstood. Like, the tight restrictions they had made on what was permitted to do on the Sabbath.  The teachers of the Law had basically made man a subject of their rules and regulations. Not made a day of rest, a gift from God for the benefit of man. Without grace, the celebration of the Sabbath will become a burden.