The scripture is clear that we have a body (Gr. sōma), and that carnal man is identified using the term flesh (Gr. sarx). We also come to understand through the scriptures the truth about sin (Gr. hamartánō) and our human nature.
Having had our human spirit separated from the Spirit of God because of sin, our human spirit being dead to God because of sin, all mankind is born in sin with physical life even while spiritually dead.
JESUS later brought spiritual understanding that when an evil spirit is cast out of one person, it can later come back to plague a human soul again if that person has not had their wanting inner being indwelt by the Spirit of God for Whom all hearts were designed.
The spirit of man was intended for, indeed the very being and soul of man was in fact brought to life by the inbreathing of the Spirit of God. It is exceedingly clear from this that the spirit of man is always left wanting in the absence of the Spirit of God. It is in fact this defect, this void, this absence, this separation from the Spirit of God which constitutes the fallen state of all of mankind since the entry of sin into the world through the disobedience of the first man. Since that time, the spirit of man has been dead to God, indeed spiritually dead and separated from the Spirit of God.
In this defective state of incompleteness, lacking the spiritual presence of the One and Only Who alone can complete man, the spirit of man has been left susceptible. Indeed, man separated from God is continually in danger of deception and enslavement to other spirits, evil and fallen spirits aware of easy prey in the desperately wicked hearts of sinful, fallen man. Since the time of Adam’s fall, these have continually sought to entrap the heart of fallen man, to enter into counterfeit engagement with the spirit of man, aiming to entrap him in the law of sin and death and to lead him astray into spiritual slavery to sin and bondage through enticements and doctrines of demons.
This is the danger of the sinful flesh of man.
Wisdom in the WORD 