The struggle for the human flesh is to accept the fact that our righteousness before God is based solely on His grace and nothing else. We see that there is a connection among true grace, servanthood, and true rest. Sabbath was meant for man. God's design was to give us a "rest" leading to a life pleasing to Him.

Additional Scripture References:

Exodus 31:12-18, 1 Samuel 21:1-9, Matthew 11:28