A voice of one calling: “In the wilderness prepare the way for the Lord; make straight in the desert a highway for our God.  Every valley shall be raised up, every mountain and hill made low; the rough ground shall become level, the rugged places a plain.  And the glory of the Lord will be revealed, and all people will see it together. For the mouth of the Lord has spoken.”
Isaiah 40:3-5 New International Version (NIV)