1)
What do we learn from "va'Omar Ad Po Savo"?
1.
Rashi: This explains what was the bolt - Hashem's word and command - "Asher Samti Gevul la'Yam Chok Olam v'Lo Ya'avrenhu."
2)
What is the meaning of "Po Yashis"?
1.
Rashi: Until here He put your strength.
2.
Malbim: Even so, I left possibility to punish Resha'im. When I need the sea to pass its border, like in the generation of Enosh, I set a limit. The waves may breach the first border, to inundate the Resha'im, but not the second Gevul, based on Hashgachah - how much it may flood.
