A.T. Robertson Commentary Romans 7:1

"Or are ye ignorant, brethren (for I speak to men who know the law), that the law hath dominion over a man for so long time as he liveth?" — Romans 7:1 (ASV)

To men that know the law (γινωσκουσιν νομον). Dative plural of present active participle of γινωσκω. The Romans, whether Jews or Gentiles, knew the principle of law.

A man (του ανθρωπου). "The person," generic term ανθρωπος, not ανηρ.