For Moses writes about the righteousness of the law, “The one who does them will live by them.”
For Moses describeth the righteousness which is of the law, That the man that doeth--"hath done" those things--which it commands. shall live in them-- (Lev 18:5). This is the one way of justification and life--by "the righteousness which is of (or, by our own obedience to) the law."
As if the apostle had said, "Righteousness by faith can never be obtained by the works of the law, because Moses describeth the righteousness of the law thus, That the man that doeth these things, shall live by them; that is, a prosperous and happy life in the land of Canaan, say some; and eternal life in heaven, say others." But then the law must...
For Moses describeth the righteousness which is of the law, That the man which doeth those things shall live by them. (4) That the law is points to Christ and is inclined to him is manifestly proved, because it propounds such a condition as can be and is fulfilled, by none but Christ alone: which being imputed to us by faith, our conscience is quieted...