Jesus came to fulfill the Scriptures, and he raised the standard for righteousness beyond just religious rule-keeping. We will only have the righteousness that God requires if God brings about supernatural transformation in us.
This is one of the great chapters in Scripture. It features the Holy Spirit, with references to Him fifteen times in the first seventeen verses alone. But, it has been remarked that the theme of the chapter is the absolute security of the believer, from the “no condemnation” of verse 1 to the nothing “will be able to separate us” of verse 39.