Here comes in the third illustration of the moral obligation of the baptized. It rests on the recognized principle that death cancels the claims of human law on a person (cf. Romans 6:7); and this with especial reference to the law of marriage, as being peculiarly applicable to the subject to be illustrated, since the Church is elsewhere regarded as married to Christ.
As has been observed above, it is from the Law that Christians are now said to be emancipated in the death of Christ; not from sin, as in the previous sections. Hence this section might at first sight seem to introduce a new line of thought.
But it is really a continuation of the same, though differently viewed; for, in the sense intended by St. Paul, being under the Law is equivalent to being under sin. How this is has already more or less appeared; and it will be shown further in the latter part of this chapter.
For elucidating the connection of thought between this and the preceding sections, it may be here briefly stated thus: A fundamental axiom with the apostle is that "where no law is, there is no transgression" (Romans 4:15; cf.
Romans 5:13; Romans 7:9); i.e. without law of some kind (including in the idea both external law and the law of conscience) to reveal to man the difference between right and wrong, he is not held responsible; to be a sinner before God he must know what sin is.
Human sin consists in a man doing wrong, knowing it to be wrong; or, at any rate, with an original power and opportunity of knowing it to be so. (This, be it observed, is the idea running through the whole of Romans 1:1-32.
, in which all mankind are convicted of sin; the whole drift of the argument being that they had sinned against knowledge.) Law, then, in making sin known to man, subjects him to its guilt, and consequently to its condemnation.
But this is all it does; it is all that, in itself, it can do. It can remove neither the guilt nor the dominion of sin. Its principle is simply to exact entire obedience to its requirements; and there it leaves the sinner.
The above view applies to all law, and of course peculiarly to the Mosaic Law (which the writer has all along mainly in view) in proportion to the authority of its source and the strictness of its requirements.
Thus it is that St. Paul regards being under the Law as the same thing as being under sin, and dying to the Law as the same thing as dying to sin. Grace, on the other hand, under which we pass in rising again with Christ, does both the things which law cannot do: it both cancels the guilt of sin (repentance and faith presumed), and also imparts power to overcome it.