Deep Calls to Deep

We're going to ignore the possibility that Psalms 42:7 is flowery poetic language intended to teach us something spiritual. Instead we're going to use it as the description of a hydrological system in a test of Hypothesis 22.

The Great Deep

The deep and the great deep are both translated from the same Hebrew word, tehom. The difference signifies a transition from the deep where Earth was created to when the great deep is in the interior of the Earth.

Sheol

Cutaway of planet Earth showing the crust, mantle, great gulf and hell.

Sheol refers to life beyond the grave, quite literally an underworld realm of the dead. It's also modified in a variety of ways which can be grouped to correspond to the main regions of the interior of the Earth.