1)
What is the comparison to rock?
1.
Rashi: The top of the water freezes [and the water is not seen].
2.
Ibn Ezra: The water freezes, and hardens like a rock 1 . It is not seen that it is water.
1
Malbim: Hashem asks Iyov if he knows why water freezes. Some say that a substance makes water freeze, and some say that water is naturally solid, just heat melts it.
2)
How is the Tehom trapped?


