1 Peter 1:24

"All mankind resemble the herbage, and all their beauty is like its flowers. The herbage dries up, and its flowers drop off;

James 1:10-11

but a rich man should rejoice in being brought low, for like flowers among the herbage rich men will pass away.

James 4:14

when, all the while, you do not even know what will happen to-morrow. For what is the nature of your life? Why, it is but a mist, which appears for a short time and then is seen no more.

1 John 2:17

And the world, with its cravings, is passing away, but he who does God's will continues for ever.

Treasury of Scripture Knowledge

Summary

For all flesh is as grass, and all the glory of man as the flower of grass. The grass withereth, and the flower thereof falleth away:

Bible References

All flesh

James 1:10
but a rich man should rejoice in being brought low, for like flowers among the herbage rich men will pass away.
James 4:14
when, all the while, you do not even know what will happen to-morrow. For what is the nature of your life? Why, it is but a mist, which appears for a short time and then is seen no more.
1 John 2:17
And the world, with its cravings, is passing away, but he who does God's will continues for ever.