What is "Rishti"?
Radak citing Targum Yonasan: Metzudasi (my trap).
Malbim: It is a net spread on the water to hold back fish. Many people are needed for it.
What is the significance of "Charmi"?
Rashi: It is an expression of a trap. We find like this ? "Yegorehu v'Ya'asfehu" (Chabakuk 1:15), "Metzodim va'Charamim" (Koheles 7:26).
Radak: This teaches that Hashem will be with them to destroy Egypt. Charmi is like Rishti (my net).
Radak citing Targum Yonasan: Serigasi (my net), for it is Sarug (woven). .
Malbim: A net will not raise a big fish. Rather, where it is caught they stab it and kill it. Via strategies, they will lure [Pharaoh] to leave his land to go to fight Melech Bavel, and many nations with him.
