Malachi 4:4-6

Common English Bible

⁴ Remember the Instruction from Moses, my servant,
        to whom I gave Instruction and rules for all Israel at Horeb.
⁵ Look, I am sending Elijah the prophet to you,
        before the great and terrifying day of the Lord arrives.
⁶ Turn the hearts of the parents to the children
    and the hearts of the children to their parents.
            Otherwise, I will come and strike the land with a curse.