Who are "Moredei Ohr"?
Rashi: Dor ha'Mabul, who rebelled with fire, due to the rain that rose from the land, and they did not need anything (Tanchuma Bereishis 12).
Ibn Ezra: People who rebel against Hashem, who is the light of the luminaries.
Malbim: It is as if they rebel against light, and do not want to be under its rule, like other people. They distance from light and constantly dwell in darkness, hidden from people.
What is the significance of "Lo Hikiru Derachav v'Lo Yashvu bi'Nsivosav"?
Malbim: Others do not see them. If Hashem would destroy them in their dark dwellings, people would not know, and this would not harm choice. If so, Hashem should do so, lest they destroy the land 1 !
Perhaps indeed, Hashem destroys them in the dark as much as possible, in a way that people will not know! (PF)
