Malachi 4:4-6 ESV
“Remember the law of my servant Moses, the statutes and rules that I commanded him at Horeb for all Israel.
“Behold, I will send you Elijah the prophet before the great and awesome day of the LORD comes. And he will turn the hearts of fathers to their children and the hearts of children to their fathers, lest I come and strike the land with a decree of utter destruction.”
ESV: English Standard Version 2016