About 95% of the time the word "flesh" in the NT is in reference to the sin nature of the person, not the body:
Definition IV: the flesh, denotes mere human nature, the earthly nature of man apart from divine influence, and therefore prone to sin and opposed to God .
G4561 - σάρξ sárx, sarx; probably from the base of ; flesh (as stripped of the skin), i.e. (strictly) the meat of an animal (as food), or (by extension) the body (as opposed to the soul (or spirit), or as the symbol of what is external, or as the means of kindred), or (by implication) human...
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So you believe your physically body is sinless?
So now flesh really doesn’t mean your physically body?
Therefore
do not let sin reign in your mortal body,
that you should obey it in its lusts. And do not present your members as instruments of unrighteousness to sin, but present yourselves to God as being alive from the dead, and your members as instruments of righteousness to God. Romans 6:12-13
Where is this “flesh nature” if not in the physically body.
The instruction is still the same for avoiding living according to the flesh.
I say then: Walk in the Spirit, and
you shall not fulfill the lust of the flesh. For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that you do not do the things that you wish. Galatians 5:16-17
Here are the works of the flesh.
Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things will not inherit the kingdom of God. Galatians 5:19-21
- that those who practice such things will not inherit the kingdom of God.
Christians who live according to the flesh, and practice the works of the flesh, will not inherit the kingdom of God.
Same instructions no matter what definition you decide to come up with for flesh.
Same outcome for living according to the flesh.
JLB