Isaiah 40:6

The voice, some one with authority speaking from heaven, said, Cry, call out, announce! And he, a voice on earth representing all true preachers of righteousness, said, What shall I cry? What are to be the contents of his preaching? And the answer comes down from heaven, All flesh is grass, all human beings are mortal, transitory, perishable, subject to death and decay, and all the goodliness thereof, all the outward show and pomp of men, is as the flower of the field, barely reaching an early maturity before it withers.