For he is the one Isaiah the prophet spoke about, saying, “The voice of one crying in the wilderness, ‘Prepare the way of Adonai, and make His paths straight.’”
“Behold, I am sending My messenger, and he will clear the way before Me. Suddenly He will come to His Temple —the Lord whom you seek— and the Messenger of the covenant —the One whom you desire— behold, He is coming,” says Adonai-Tzva’ot.
And he will go before Him in the spirit and power of Elijah, to turn the hearts of fathers to the children and the disobedient ones to the wisdom of the righteous, to make ready for Adonai a prepared people.