'Lowest Hell' in the Bible

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.

For great is thy mercy toward me: and thou hast delivered my soul from the lowest hell.

For if God did not spare angels when they sinned, but threw them into the lowest hell and imprisoned them in chains of deepest darkness, holding them for judgment;