Isaiah 40:3-5 NIV

[3] A voice of one calling: “In the wilderness prepare the way for the LORD; make straight in the desert a highway for our God. [4] Every valley shall be raised up, every mountain and hill made low; the rough ground shall become level, the rugged places a plain. [5] And the glory of the LORD will be revealed, and all people will see it together. For the mouth of the LORD has spoken.”