A.T. Robertson Commentary Romans 8:7

"because the mind of the flesh is enmity against God; for it is not subject to the law of God, neither indeed can it be:" — Romans 8:7 (ASV)

Is not subject (ουχ υποτασσετα). Present passive indicative of υποτασσω, late verb, military term for subjection to orders. Present tense here means continued insubordination.

Neither indeed can it be (ουδε γαρ δυνατα). "For it is not even able to do otherwise." This helpless state of the unregenerate man Paul has shown above apart from Christ. Hope lies in Christ (7:25) and the Spirit of life (8:2).