Why does the 'Beis" of "ba'Mageifah" with a 'Patach', in spite of the fact that it did not mention it earlier?
Rashi and Targum Yonasan: Because the punishment fitted the crime perfectly
and was absolutely appropriate: Worms emerged from their tongues and crawled into their navels (Rashi).
Seforno: The plague that the spies referred to - "Eretz Ocheles Yoshvehah hi!", now hit them, and they all died
Midah Keneged Midah, and that is why the Torah adds "Vayamusu lifnei Hashem".
According to Targum Yonasan, the worms emerged from their feces and ate up their tongues.
Due to the bad air that enveloped them (Refer to 13:32:3:2).
As opposed to the rest of the people, who died over the space of forty years.