Leviticus 18:5

Ye shall therefore keep my statutes, and my judgments
The same as before; these they were to keep in their minds and memories, and to observe them and do them: which if a man do he shall live in them;
live a long life in the land of Canaan, in great happiness and prosperity, see ( Deuteronomy 30:20 ) ( Isaiah 1:19 ) ; for as for eternal life, that was never intended to be had, nor was it possible it could be had and enjoyed by obedience to the law, which fallen man is unable to keep; but is what was graciously promised and provided the covenant of grace, before the world was, to come through Christ, as a free gift to all that believe in him, see ( Galatians 3:11 Galatians 3:12 Galatians 3:21 ) ; though some Jewish writers interpret this of eternal life, as Jarchi, Aben Ezra, and Ben Gersom: I [am] the Lord;
that has enjoined these statutes and judgments, and promised life to the doers of them, able and faithful to perform what is promised.