For this is he who was spoken of by the prophet Isaiah, saying: “The voice of one crying in the wilderness: ‘Prepare the way of the Lord; make His paths straight.’ ”
Behold, I send My messenger, and he will prepare the way before Me. And the Lord, whom you seek, will suddenly come to His temple, even the messenger of the covenant, in whom you delight. He is coming, says the Lord of Hosts.
And he will go before Him in the spirit and power of Elijah, to turn the hearts of the fathers to the children and the disobedient to the wisdom of the just, to make ready a people prepared for the Lord.”