1)
What is the comparison to Egypt?
1.
Malbim: They admitted that Hashem struck them due to the Aron, just they thought that it is like natural afflictions, which have a limited duration, and it will go away. The Egyptians erred to think so, and Hashem struck them Makeh after Makeh, and they needed to send Bnei Yisrael. Do not be like them!
2)
What is the meaning of "His'alal Bahem"?
1.
Radak: He did acts of destruction to them - "Asher His'alalti b'Egypt" (Shemos 10:2).
