(palaios, "old," "ancient"): A term thrice used by Paul (Ro 6:6; Eph 4:22; Col 3:9) to signify the unrenewed man, the natural man in the corruption of sin, i.e. sinful human nature before conversion and regeneration. It is theologically synonymous with "flesh" (Ro 8:3-9), which stands, not for bodily organism, but, for the whole nature of man (body and soul) turned away from God and devoted to self and earthly things.
The old man is "in the flesh"; the new man "in the Spirit." In the former "the works of the flesh" (Ga 5:19-21) are manifest; in the latter "the fruit of the Spirit" (Ga 5:22-23). One is "corrupt according to the deceitful lusts"; the other "created in righteousness and true holiness" (Eph 4:22-24 the King James Version).
Dwight M. Pratt