Isaiah 40:3-5

A voice of one calling: 'In the desert prepare the way for the LORD; make straight in the wilderness 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 mankind together will see it. For the mouth of the LORD has spoken.' Isaiah 40:3-5 NIV