1)
Why does it say "Elokim Tzevakos"?
1.
Radak: Refer to 80:15:1:1-2.
2)
What is his Tefilah?
1.
Rashi: To build Your house.
2.
Radak: To bring the Ge'ulah close - "Nichsefah v'Gam Kalsah Nafshi" (verse 3).
3.
Malbim: These paths are only mental - the desire and hope in the hearts of those who trust. He asks that they become actual.
3)
Why does it say "Elokei Yakov"?
1.
Radak: He is the father of the tribes of Yeshurun; there is no Zar among them.