Isaiah 40:5-8

5 And the glory of the LORD shall be revealed, and all flesh shall see it together: for the mouth of the LORD has spoken it.

6 The voice said, Cry. And he said, What shall I cry? All flesh is grass, and all the goodliness thereof is as the flower of the field:

7 The grass wither, the flower fades: because the spirit of the LORD blows on it: surely the people is grass.

8 The grass wither, the flower fades: but the word of our God shall stand for ever.