Isaiah 40:6-8New King James Version (NKJV)
6 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.
7 The grass withers, the flower fades,
Because the breath of the Lord blows upon it;
Surely the people are grass.
8 The grass withers, the flower fades,
But the word of our God stands forever.”