Malachi 4:6

and he shall turn the heart of the fathers to the children and the heart of the children to their fathers, in having them both realize the love of Jehovah in sending the Messiah and in the subsequent salvation wrought for all men, Luke 1:17, lest I come and smite the earth with a curse, namely, in the event that men will not heed the preaching of repentance unto the forgiveness of sins. The Jews as a nation rejected the Messiah and have come under the curse. But this did not result in the overthrow of the kingdom of God and Christ. The spiritual Israel, rather, has heeded, and is heeding, the Word of Grace and is enjoying the fullness of the blessings promised throughout the Old Testament and so gloriously fulfilled in the New Dispensation.