'Depths' in the Bible

“But whoever causes the downfall of one of these little ones who believe in Me—it would be better for him if a heavy millstone were hung around his neck and he were drowned in the depths of the sea!

Just then there was a man in their synagogue with an unclean spirit; and he cried out [terribly from the depths of his throat],

Seeing Jesus, he cried out [with a terrible voice from the depths of his throat] and fell down before Him [in dread and terror], and shouted loudly, “What business do we have [in common] with each other, Jesus, Son of the Most High God? I beg You, do not torment me [before the appointed time of judgment]!”

But they [loudly] shouted out all together, saying, “Away with this Man, and release Barabbas to us!”

or "Who will go down into the depths?' (that is, to bring the Messiah back from the dead)."

but to us did God reveal them through His Spirit, for the Spirit all things doth search, even the depths of God,

Three times I was beaten with rods by the Romans.Once I was stoned by my enemies.Three times I was shipwrecked.I have spent a night and a dayin the open sea.

(Now this expression, “He ascended,” what does it mean except that He also had previously descended [from the heights of heaven] into the lower parts of the earth?

These men are waterless springs and mists driven by a storm, for whom the utter depths of darkness have been reserved.

wild sea waves, spewing out the foam of their shame; wayward stars for whom the utter depths of eternal darkness have been reserved.

But unto you I say, and unto the rest in Thyatira, as many as have not this doctrine, and which have not known the depths of Satan, as they speak; I will put upon you none other burden.

The fifth angel blew his trumpet; and I saw a Star which had fallen from Heaven to the earth; and to him was given the key of the depths of the bottomless pit,

and he opened the depths of the bottomless pit. And smoke came up out of the pit resembling the smoke of a vast furnace, so that the sun was darkened, and the air also, by reason of the smoke of the pit.