Psalm 37:1-2

Do not fret because of those who are evil or be envious of those who do wrong; for like the grass they will soon wither, like green plants they will soon die away.

Do not fret because of those who are evil or be envious 
Proverbs 3:31  Do not envy the violent or choose any of their ways.
Proverbs 23:17  Do not let your heart envy sinners, but always be zealous for the fear of the LORD.

of those who do wrong 
Psalm 73:3  For I envied the arrogant when I saw the prosperity of the wicked.
Proverbs 24:19-20  Do not fret because of evildoers or be envious of the wicked, for the evildoer has no future hope, and the lamp of the wicked will be snuffed out.

for like the grass they will soon wither 
2 Kings 19:26  " 'Their people, drained of power, are dismayed and put to shame. They are like plants in the field, like tender green shoots, like grass sprouting on the roof, scorched before it grows up.' "
Job 14:2  "They spring up like flowers and wither away; like fleeting shadows, they do not endure."
Psalm 102:4  My heart is blighted and withered like grass; I forget to eat my food.
Isaiah 40:7  "The grass withers and the flowers fall, because the breath of the LORD blows on them. Surely the people are grass."

like green plants they will soon die away 
Psalm 37:38  But all sinners will be destroyed; there will be no future for the wicked.
Psalm 92:6-7  Senseless people do not know, fools do not understand, that though the wicked spring up like grass and all evildoers flourish, they will be destroyed forever.
James 1:10  But the rich should take pride in their humiliation--since they will pass away like a wild flower.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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