Flesh is corporeal in that "God formed the man from the dust of the ground" (Ge 2:7). But it lacks the dimension of life. For this reason God "breathed into his nostrils the breath of life, and the man became a living being" (:7). Therefore you might say that there is an inner as well as outer man. This is reflected in "who among men knows the thoughts of a man except the man's spirit within him" (1Co 2:11)? On the sixth day "God created man in His own image" (Ge 1:27) in "spirit and soul and body" (1Th 5:23). "It is I who made the earth and created man upon it" (Isa 45:12). "It was Adam who was first created" (1Ti 2:13) and in Hebrew his name means "humanity." In an extended sense the word "flesh" is also humanity. The human race inherits from Adam for, "as in Adam all" (1Co 15:22), applies to everyone. "God saw all that He had made, and behold, it was very good" (Ge 1:31). Therefore it cannot be concluded that man is inherently sinful.
When God put Adam in the Garden of Eden he "commanded the man" (Ge 2:16) "from the tree of the knowledge of good and evil you shall not eat, for in the day that you eat from it you will surely die" (:17). It was not said that "you will drop dead" as if it was poisonous. So to die must mean that death was not part of God's scheme of things, but it would transpire if Adam was disobedient. "The Lord fashioned into a woman the rib which He had taken from the man" (Ge 2:22) and they "were both naked and were not ashamed" (:25). However, Eve "took from its fruit and ate; and she gave also to her husband with her, and he ate" (3:6). "It was not Adam who was deceived, but the woman being deceived, fell into transgression" (1Ti 2:14). Transgression is defined as lawlessness and it is against God's instruction because God asked, "'Have you eaten from the tree of which I commanded you not to eat?'" (Ge 3:11). But when they ate of the fruit of the tree "the eyes of both of them were opened, and they realized they were naked so they . . . made coverings for themselves" (3:7). They had "become like one of us knowing good and evil" (:22). Did they know being naked as good or evil? They didn't feel shame before, but it seems they did now. They had to replace the innocence of their previous condition with a covering and God, himself, had to make "garments of skin for Adam and his wife" (:21). In Laodicea they didn't know that they were "wretched and miserable and poor and blind and naked" (Rev 3:17). God advises "buy from me . . . white garments that you may clothe yourself, and that the shame of your nakedness may not be revealed" (3:18).