Isaiah 40:3-4

3A voice of one calling: “In the wilderness prepare the way for the LORD Or A voice of one calling in the wilderness: / “Prepare the way for the Lord ; make straight in the desert a highway for our God. Hebrew; Septuagint make straight the paths of our God

4Every valley shall be raised up, every mountain and hill made low; the rough ground shall become level, the rugged places a plain.