Malachi 4:4-6 - Remember What God Has Done And Will Do
4 Remember ye the law of Moses my slave, which I commanded unto him in Horeb statutes and my rights over all Israel. 5 Behold, I send you Elijah the prophet before the coming of the great and terrible day of the LORD: 6 and he shall convert the heart of the fathers to the sons, and the heart of the sons to the fathers, lest I come and smite the earth with destruction.