5 Bible Verses about Bottomless Pit

They have over them as king the angel of the abyss: his name in Hebrew is Abaddon; and, in the Greek, he has a name Apollyon.

And when they finish their testimony, the beast that comes up out of the abyss will make war with them, and overcome them, and kill them.

The beast which you saw was, and is not, and is about to come up out of the abyss, and to go into perdition. And those who dwell on the earth shall wonder, whose names have not been written in the book of life from the founding of the world, when they behold the beast, that he was, and is not, and shall come.

And I saw an angel coming down out of Heaven, having the key of the abyss, and a great chain upon his hand. And he seized the dragon, the old serpent, which is the Devil and Satan, and bound him for a thousand years, and cast him into the abyss, and shut it, and sealed it over him, that he should deceive the nations no more, until the thousand years should be finished; after these things he must be loosed for a little time.

And, when the thousand years are finished, Satan will be loosed out of his prison,