Concerning the conflict continually going on between the old and new natures in the believer, St. Paul says:
Regarding this conflict in his own personal experience, he writes:
It has been taught by some that we need not experience this continual strife between the old nature and the new. They say: “Get out of the 7th of Romans into the 8th.”
We would remind such that the Apostle Paul wrote Romans 7 and Romans 8 at the same sitting; that in the original language the letter goes right on without interruption — without even a chapter division.
Thus the same apostle who exclaims: “There is therefore now no condemnation to them which are in Christ Jesus” (Rom. 8:1) refers in the same letter, only a few sentences before, and in the present tense, to “the law of sin which is in my members,” and freely acknowledges the present operation of that law in his members, as we have seen above.
How then shall we get out of the 7th of Romans into the 8th? Paul experienced both at the same time, and so do we, for while we are free from the condemnation of sin, sin itself nevertheless continues to work within us, and we must constantly “mortify the deeds of the body” (Rom. 8:13).