Only the Holy Spirit alone can carry out this great work within our lives. The Believers Faith must be placed and maintained strictly in Christ and the Cross, i.e., The Finished Work, i.e., The Blood of Jesus, which then gives the Holy Spirit latitude to carry out this great work He demands within our lives.
We must start thinking spiritually, which refers to the fact that everything is furnished to us through the Cross, and is obtained by Faith and not works. In effect, the Believer can do little more than furnish a "willing mind and obedient heart" (1 Chronicles 28:9). Even in the "obedient heart" about all that the Believer can do, is to be willing that the heart be made obedient to the Lord. When the believing sinner is Born Again, the Holy Spirit automatically comes in, imparting to the Believer the Divine Nature (John 3:3; 2 Cor. 5:17). As well, the Spirit of God sets about to bring the Believer to conformity to the Image of Christ (Romans 8:29). In this the Holy Spirit also brings great Power which is now available to the Believer (Acts 1:8; 8:12).