Matthew 12:1-2 (KJV)
1 At that time Jesus went on the sabbath day through the corn; and his disciples were an hungred, and began to pluck the ears of corn, and to eat.
2 But when the Pharisees saw it, they said unto him, Behold, thy disciples do that which is not lawful to do upon the sabbath day.
The book of the Law gave guidance as to what was permitted on the Sabbath and what was considered wrong on the Sabbath.
As I read the text the understanding was made clear. God had created the Sabbath for man to enjoy but man added his understanding to what God had created. Man in an attempt to explain what God meant had missed that God is God and He can do whatever he wants to do.
The Sabbath day that the disciples were walking through the field Jesus was with them. Jesus always brings to mind change. When we read that Jesus is present we need to get ready for a change.
We so often word hard at staying the same that we miss that God wants us to grow in our faith and walk with Him. Growth often requires change. Stop looking at the situation and start looking at Jesus the author and finisher of our faith.