My salvation in Christ is perfect, but I am not perfect. How can a man that is not perfect in himself walk according to a perfect position if he is set in it? It is just here where the intercession of Christ, who is in heaven, conies in. Having set us in the perfect liberty of the appreciation of His own work by God the Father, the Lord now on high is occupied in bringing us through the wilderness.
If any man sin, we have an advocate with the Father, Jesus Christ the righteous (1 John 2:1). From on high He sees our sin as He did Peter's (John 13:38), even before we sin, and as He said to Peter, "Simon, Simon, behold, Satan hath desired to have you, that he may sift you as wheat: but I have prayed for thee, that thy faith fail not: and when thou art converted, strengthen thy brethren" (Luke 22:31-32).
Nothing but a living Christ on high could suffice to meet our needs, assure our hearts and cultivate our affections.