For a fire is kindled in mine anger, and shall burn unto the lowest hell, and shall consume the earth with her increase, and set on fire the foundations of the mountains.
(Deuteronomy 32:22) KJV
This post is part of the WHY? daily devotional for March
The pit, the pit of corruption, and the lowest hell are the same thing: the molten core of the earth from which there is no return. The grave, on the other hand, in the mantle, you can be brought up from.