1)
What is "Rinenas Resha'im mi'Karov"?
1.
Rashi: A Rasha's song (success) is only from recently - it does not last long.
2.
Malbim: Only recently, Resha'im succeed. In the old days, they did not. Therefore, you cannot say that his success will last forever.
2)
Why did he add "v'Simchas Chanef Adei Raga"?
1.
Rashi: It (Malbim - a Rasha's success) ends in a short time.
