1)
What is the difference between Gedolos and Nifla'os?
1.
Devar Eliyahu: Gedolos are via nature; Nifla'os are supernatural. About Gedolos he said Cheker, for they are constantly. About Nifla'os he said Mispar, for miracles are not constant, rather, sporadic. One can count them 1 .
2)
What is the significance that Hashem's acts are without number?
1.
Malbim: Due to this, even the loss of the sun and its legions would not be considered evil, for it is such a miniscule part of the Klal.


