Charles Spurgeon Commentary Romans 8:3-5

"For what the law could not do, in that it was weak through the flesh, God, sending his own Son in the likeness of sinful flesh and for sin, condemned sin in the flesh: that the ordinance of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit. For they that are after the flesh mind the things of the flesh; but they that are after the Spirit the things of the Spirit." — Romans 8:3-5 (ASV)

Condemned sin in the flesh: that the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit. For they that are after the flesh do mind the things of the flesh;

Unregenerate men, the men who remain in the state in which they were born, the men who allow their lower nature to have the predominance, they that are after the flesh do mind the things of the flesh. That is all that they care about, all that they think about, all that they toil for, all that they really mind.