Paul contrasts the old covenant (the letter of the law, which brings death and condemnation) with the new covenant (of the Spirit, which gives life and a transformed heart), showing that while the law is glorious, its glory fades and was always meant to point us to the surpassing glory of Christ. As we behold Jesus, the Spirit transforms us from glory to glory, freeing us from a merely legal relationship with God into a father-child relationship of faith, hope, and love.