For this is he that was spoken of by the prophet Isaiah, saying, The voice of one crying in the wilderness, Prepare ye the way of Yahweh, make his paths straight.
Behold, I will send my messenger, and he shall prepare the way before me: and the Sovereign, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith Yahweh of hosts.
And he shall go before him in the spirit and power of Eliyah, 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 Yahweh.