1)
Why does it say "Hashem Tzevakos"?
1.
Radak: He is the Master of legions above and below, and everything is in His ability.
2)
Why does it mention here sanctifying Him?
1.
Radak: If you will fear Him and sanctify Him, He will save you from the legions below that make war against you.
2.
Malbim: Sanctify only Him, via doing His Mitzvos.
3)
What is "Mora'achem"?
1.
Radak: You will fear only Him.
2.
Malbim: Via Him, others will fear you.
4)
What is "Ma'aritzchem"?
1.
Rashi: He strengthens you [Radak - so your enemies will not be able to harm you].
2.
Malbim: Via Him, others will truly fear you and consider you to be strong.