Romans 10:5 - Joseph Benson’s Commentary on the Old and New Testaments

For Moses describeth the righteousness of the law The only way of becoming righteous by the law, when he saith, The man that doeth these things shall live by them Not only a happy life in the land of Canaan, but in heaven, of which Canaan was a type and figure: (see on Leviticus 18:5.) That is, he who perfectly keeps all these precepts in every point, he alone may claim life and salvation by them. For though the law directs to a better and more effectual righteousness in Christ, yet in itself, considered as a law, abstracted from its respect to Christ and the gospel, (for so the unbelieving Jews embraced and adhered to it,) it acknowledges nothing as a righteousness, sufficient to justify a man, but that of perfect obedience; a way of justification impossible to any who have ever transgressed any one law in any point. As if the apostle had said, Moses, by showing that the law requires exact and perfect obedience for righteousness, (an obedience impossible to be performed by us in our fallen state,) may thereby convince us that righteousness is not to be attained by our own works, but only by faith in Christ. It may be proper to observe here, that although the law, which was given from Sinai, was not, strictly speaking, a covenant of works, or of mere justice, (for who then could have been saved under that dispensation?) yet, that it might more effectually bring men to Christ, and render the covenant of grace more acceptable, it had a great mixture of the strictness and terror of such a covenant. Accordingly it condemned notorious offenders to temporal death in many cases, and made no provision for the pardon of any sin, deliberately and wilfully committed against it. See Hebrews 10:28. It, however, contained some further discoveries of that covenant of grace, which was made with mankind after the fall, by which many had been saved during the patriarchal ages, and which had been solemnly and repeatedly renewed to Abraham, Isaac, and Jacob.