'Gloom' in the Bible

For if God spared not the angels who had sinned, but having cast them down to the deepest pit of gloom has delivered them to chains of darkness to be kept for judgment;

These are springs without water, and mists driven by storm, to whom the gloom of darkness is reserved for ever.

raging waves of the sea, foaming out their own shames; wandering stars, to whom has been reserved the gloom of darkness for eternity.