“The fact that Christ has come to indwell us changes the fundamental direction of our lives, according to the New Testament. ‘It is no longer I who live,’ says Paul, ‘but Christ lives in me.’ The old life, dominated by sin, Satan, and self, has gone. Christ has come to take possession of our whole beings and to provide all the resources we need to live for Him.
Life is no longer a matter of frustrated striving to keep an external code, but it is living in the power of the indwelling Christ. His yoke fits well; the burden of His royal law is light because He has come to shoulder it from within, in the power of the Spirit.”
–Sinclair Ferguson, In Christ Alone: Living the Gospel Centered Life (Orlando: Reformation Trust, 2007), 119.