“But this is the covenant I will make with the house of Israel after those days, declares the LORD. I will put My law in their minds and inscribe it on their hearts. And I will be their God, and they will be My people.
He now shews a difference between the Law and the Gospel, for the Gospel brings with it the grace of regeneration: its doctrine, therefore, is not that of the letter, but penetrates into the heart and reforms all the inward faculties, so that obedience is rendered to the righteousness of God. A question may however be here moved, Was the grace of regeneration wanting to the Fathers under the Law?
The prophet, having found his sleep sweet, made so by the revelations of divine grace, sets himself to sleep again, in hopes of further discoveries, and is not disappointed; for it is here further promised, I. That the people of God shall become both numerous and prosperous. Israel and Judah shall be replenished both with men and cattle, as if they were sown with the seed of both, Jer 31:27.
Commenting on Jeremiah 31:27-34
But this shall be the covenant that I will make with the house of Israel; after those days, saith the Lord,.... The several articles or branches of the covenant next follow, which show it to be different from the former: I will put my law in their inward parts, and write it in their hearts; not the ceremonial law, which was abolished when this covenant...