What are "Ketzos Derachav"?
Rashi: They are light and few, compared to His great ways.
Malbim: This statute (the rain cycle) is just a tiny way in which He changed nature.
What is "Shemetz Davar"?
Rashi #1: What hint of a matter can a person understand from His deeds?
Rashi #2: It is something detrimental, like "l'Shimtzah".
What was the question "v'Ra'am Gevurosav Mi Yisbonan"?
Malbim: Also thunder and lightning are due to the rain cycle. They do not depend on the Ma'arachah. If so, Hashem has many ways to punish a Rasha - flood, lack of rain, lightning, change of air... - without changing the stars! Rather, He handed over conduct to the Ma'arachah. His Hashgachah does not override it.


