Romans 7:2 : For the woman that hath a husband is bound by law to the husband while he liveth; but if the husband die, she is discharged from the law of the husband. This is the general law of marriage. Whatever exceptions there might be are not here taken in-to consideration, for they had no part in the truth that Paul was illustrating. It was intended that both parties to a marriage should be faithful to their marriage vows, and that only death should separate them. If they remained true to each other, only death could separate them. As Paul was using this illustration to show that the brethren were released from the law so as to be married to Christ, it is easy to see why he speaks of the wife's obligations instead of the husband's. The death of the husband releases the wife from the law of her husband--that is, it releases her from the law that bound her to that husband.