The glory of the Lord shall be revealed, and all flesh shall see it together; for the mouth of the Lord has spoken.”  The voice said, “Cry out!” and he said, “What shall I cry?”  “All flesh is grass, and all its loveliness is like the flower of the field. The grass withers, the flower fades, because the breath of the Lord blows upon it; surely the people are grass. The grass withers, the flower fades, but the word of our God stands forever.”

Is 40:5-8   (NKJV)