I do not believe that the 'old nature', i.e., the propensity to sin is <i>completely dead</i>. For if that were so, then why would a Christian sin? There would be no source from which sin would be committed.
I'm still trying to wrap my mind around this. So would you agree if A & C were combined to get
One nature ( the new one ). The old nature is not completely
dead, but only its remnant influences the Christian to sin.
Also, how should we understand Romans 6:6 with regard to our old nature if it is not completely dead? How would we interpret 'our old self was crucified with him (NASB)'?