1)
Why does it say "Kave El Hashem"?
1.
Malbim: He already explained trust in Hashem and its benefit in both worlds. Sometimes a Tzadik does not succeed in this world, in order that his happiness will not cease in the world to come. Hope to Hashem, for all is for your good.
2)
How does one guard Hashem's path?
1.
Radak: Do not veer from everything that Hashem commanded you.
2.
Malbim: Wait on his path - it will bring you to eternal life better than this life.
3)
Why does it say "vi'Yromimcha Lareshes Eretz"?
1.
Malbim: If you did not inherit the lowly land, He will elevate you to inherit another land that stands in the height of the world - the world of eternal life.
