Isaiah 40: 6-8

A voice says, “Cry out!”
    And I said, “What shall I cry?”
All people are grass,
    their constancy is like the flower of the field.
 The grass withers, the flower fades,
    when 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 will stand forever.

Isaiah 40: 6-8