Jesus taught from real examples and from situations as they occurred. We are encouraged to teach our children in a similar manner, and children are encouraged to listen to their parents so that they can avoid dangers.
When the Pharisees questioned His disciples’ ‘working’ on the Sabbath, He referred them to the Old Testament examples of David’s men eating the consecrated bread and of priests working in the temple on the Sabbath, yet being innocent.
These incidents underline the works of necessity (avoiding hunger) and mercy (that others might worship God) that are permitted on the Sabbath.
Jesus didn’t break the Law, He fulfilled it. He showed the Pharisees what God really wanted: ‘I desire compassion, not a sacrifice.’
We are reminded that God made man first, then gave him a day of rest, not vice-versa. ‘The Son of Man is Lord of the Sabbath.’ The only thing Jesus changed was the day on which we worship Him. He gave it His name, The Lord’s Day.