Every honest Christian will testify that becoming a believer does not erase the tendency to sin. The Spirit is consistently portrayed in Rom. The fact that Paul makes the presentation of the Spirit that he does in Rom. 8, his most detailed treatment of the Spirit, to a church experiencing serious disunity is especially significant. For Paul, orientation to the sarx or the pneuma is the total attitude which determines everything.
Life is determined as a totality by sarx or pneuma.