We have two different natures: (1) the nature we were created with, which is the nature to which Christ restores us; and (2) the nature we are born with, which is the nature of the fallen Adam and Eve, in need of healing and redemption by God. All the great physicians of the soul through the centuries of Christian history have regarded the Adam and Eve account as a description of our human nature, both now in our present life and later, when it has been redeemed and restored to the likeness of God as it was created to be (Gen. 1:26). Being in God's (Christ's) image and likeness is the human nature we were created to possess and can now regain through Jesus. ...
So we were not created to have any spiritual defects that are not in Christ, who has none. No spiritual defects we've inherited through the flesh as a result of the fall of Adam are natural to what we were created to be. According to Scripture, they are all unnatural. We were created with one nature and are born into this life with a different nature, a fallen nature with the various spiritual birth defects that accompany it.
To say that a spiritual defect is our God-given nature because we are born with it, then, is a theological error. And any theological error, as the saints teach, provides access for evil to come in and establish a preference for such errors, and an avoidance of truth, in a person. One theological error, they say, leads to others. Thinking an inborn defect is "natural" (and therefore unavoidable), for instance, cuts off any readiness to believe that redemption is needed - or a Redeemer, or the repentance to which the Gospel calls us.
~ Dee Pennock, God's Path to Sanity (2012)