Spiritual death has to be absolutely destroyed in the life of man.

The nature of Satan has to be completely destroyed from man's nature, so that he can stand as free from Satanic authority as though he had never died spiritually.

..........Romans 6:6
"Knowing this, that our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin."

.........Colossians 1:13
"Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son:"