Isaiah 40:3-5

³A voice is calling,
“Clear the way for the Lord in the wilderness;
Make smooth in the desert a highway for our God.
⁴“Let every valley be lifted up,
And every mountain and hill be made low;
And let the rough ground become a plain,
And the rugged terrain a broad valley;
⁵Then the glory of the Lord will be revealed,
And all flesh will see it together;
For the mouth of the Lord has spoken.”