“Is hell a literal lake of fire?”
For the average reader with limited Bible exposure, it’s probably useful to distinguish between hades, which is a holding place for the human dead prior to the final judgment, and hell [γέεννα, sometimes pronounced gehenna], also called the lake of fire, the final destination of the wicked dead, the place of permanent separation from God. Hell was not created for mankind at all, but for the devil and his angels. After man’s final judgment, death and hades will be thrown into the lake of fire for all eternity. This is called the “second death”.