The first facet of Israel's final restoration is the national regeneration of Israel. The timing of this regeneration has already been discussed in Chapter 14, The Campaign of Armageddon and the Second Coming of Jesus the Messiah. This section is concerned with the development of that motif. The basis of Israel's final regeneration is the New Covenant, in Jeremiah 31:31-34.
The announcement of the New Covenant begins with a declaration that it will be a Jewish covenant, for it will be made with both houses of Israel (v. 31). It will be in sharp contradistinction with the older Mosaic Covenant (v. 32). Of the five Jewish covenants, the Mosaic was the only conditional one. Although God had been faithful in keeping His terms of the covenant, Israel had not been so faithful, resulting in the Mosaic Covenant's being broken. For while the Mosaic Covenant showed the standard of righteousness which the Law demanded, it could never impart to the Jew the power to keep it. But that problem will be rectified in the New Covenant (v. 33) through regeneration, which will provide the internal power necessary to meet and to keep the righteous standards of God. The result of the New Covenant will be a total national regeneration of Israel (v. 34).
Very good laydown of Jeremiah 31 above. Just for reference here are the mentioned verses:
Jeremiah 31:
31 “Behold, the days are coming, says the Lord, when I will make a new covenant with the house of Israel and with the house of Judah— 32 not according to the covenant that I made with their fathers in the day that I took them by the hand to lead them out of the land of Egypt, My covenant which they broke, though I was a husband to them, says the Lord. 33 But this is the covenant that I will make with the house of Israel after those days, says the Lord: I will put My law in their minds, and write it on their hearts; and I will be their God, and they shall be My people. 34 No more shall every man teach his neighbor, and every man his brother, saying, ‘Know the Lord,’ for they all shall know Me, from the least of them to the greatest of them, says the Lord. For I will forgive their iniquity, and their sin I will remember no more.”
What I find baffling is how Preterists can imagine this unconditional promise of God was somehow already fulfilled. It CAN'T have been for the simple reason that there are STILL unbelieving Jews in the world. Israel, as a nation, has not accepted Jesus Christ as the Messiah. They are still beset by enemies on all sides, plotting to wipe them from the face of the earth and drive them into the sea. If this had all been fulfilled through the "church", then they must explain why the "church" is still attacked and beset by enemies at every chance.
AND...the last time I checked, lions and tigers still ate the flesh of other animals. My two lil' tiggers would starve to death if I put them on a vegetarian diet. ;o)