John 15:1-11. Abiding in Christ is the source of Christian joy. This relationship aspect of Jesus is often left behind for legalistic pursuits.
Galatians 5:1-6. Legalism always demands more. Paul gives the example of an unrelenting weight of a yoke upon the neck of those that abide by it. In contrast, Jesus brings freedom to those so that they may not be a slave to the law.