1)
What is the difference between Techas and Yir'ah?
1.
Malbim: Techas is lowliness of Ru'ach, for he considers himself weaker than another, even if he does not fear lest he harm him 1 .
1
'Rashi': Both of these were in response to "Ein Banu Ko'ach."
2)
Why did he say "Lo Lachem ha'Milchamah Ki lEi'lokim"?
1.
'Rashi': This was in response to "va'Anachnu Lo Neda." Since you rely on Him, He will fight for you.
2.
Malbim: The Goyim do not fight with you, rather, with Hashem. So it says in Tehilim 83, which refers to this war - "No'atzu Lev Yachdav Alecha Bris Yichrosu." If so, also He will fight for you!
