Leviticus 18:5

He shall live in them; not only happily here, but also eternally hereafter, as it is expounded Matthew 19:17 Romans 10:5. This is added as a powerful argument why they should follow God's commands rather than men's examples, because their life and happiness depends upon the one, not the other. And though in strictness, and according to the law or covenant of works, they could not challenge life for doing, except their obedience was universal, perfect, constant, and perpetual, and therefore no man since the fall could be justified by the law, as the apostle affirms and proves, Ro 4 Ga 3; yet by the covenant of grace this life is promised to all that obey God's commands sincerely, though not perfectly, 1 Timothy 4:8.