What does the Bible say about fretting over evildoers?

In Psalm 37, David urges believers not to fret over the prosperity of evildoers. He emphasizes that while it may appear they flourish like green bay trees, their time is fleeting, and they will eventually be cut down (Psalm 37:1-2). This perspective is important for Christians as it encourages reliance on God's justice rather than succumbing to jealousy or anxiety over worldly success. Instead of fretting, believers are called to trust in the Lord and engage in good works, reminding themselves that the ultimate reward lies in the eternal inheritance promised to the righteous.