Psalm 37:2
"For they shall soon be cut down like the grass, and wither as the green herb."
Cross References (ranked by relevance)
Psalm 92:7
When the wicked spring as the grass, and when all the workers of iniquity do flourish; it is that they shall be destroyed for ever:
Job 14:2
He cometh forth like a flower, and is cut down: he fleeth also as a shadow, and continueth not.
1 Peter 1:24
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: