'Abyss' in the Bible

The abyss! as with clothing Thou hast covered it, Above hills do waters stand.

and he was calling on him, that he may not command them to go away to the abyss,

or, 'Who shall go down to the abyss,' that is, Christ out of the dead to bring up.

And the fifth messenger did sound, and I saw a star out of the heaven having fallen to the earth, and there was given to it the key of the pit of the abyss,

and he did open the pit of the abyss, and there came up a smoke out of the pit as smoke of a great furnace, and darkened was the sun and the air, from the smoke of the pit.

and they have over them a king -- the messenger of the abyss -- a name is to him in Hebrew, Abaddon, and in the Greek he hath a name, Apollyon.

'And when they may finish their testimony, the beast that is coming up out of the abyss shall make war with them, and overcome them, and kill them,

'The beast that thou didst see: it was, and it is not; and it is about to come up out of the abyss, and to go away to destruction, and wonder shall those dwelling upon the earth, whose names have not been written upon the scroll of the life from the foundation of the world, beholding the beast that was, and is not, although it is.

And I saw a messenger coming down out of the heaven, having the key of the abyss, and a great chain over his hand,

and he cast him to the abyss, and did shut him up, and put a seal upon him, that he may not lead astray the nations any more, till the thousand years may be finished; and after these it behoveth him to be loosed a little time.