1)
What does this Mizmor discuss?
1.
Rashi (2): It discusses those who trust in their wealth. Malbim - it rebukes them. They serve their bodies and land, and enslave and destroy their Nefashos and Neshamos. It shows their folly - they switch the enduring world for the world that perishes, the spiritual for the physical, the honored for the disgraced.
2.
Radak #2: It discusses this world and the world to come.