Isaiah 40:5 WEB

³  The voice of one who cries, Prepare you in the wilderness the way of Yahweh; make level in the desert a highway for our God.

⁴  Every valley shall be exalted, and every mountain and hill shall be made low; and the uneven shall be made level, and the rough places a plain:

⁵  and the glory of Yahweh shall be revealed, and all flesh shall see it together; for the mouth of Yahweh has spoken it.

⁶  The voice of one saying, Cry. One said, What shall I cry? All flesh is grass, and all the glory of it is as the flower of the field.

⁷  The grass withers, the flower fades, because the breath of Yahweh blows on it; surely the people is grass.