'Deepest' in the Bible

Then I will make you go down with those who go down into the underworld, to the people of the past, causing your living-place to be in the deepest parts of the earth, in places long unpeopled, with those who go down into the deep, so that there will be no one living in you; and you will have no glory in the land of the living.

Her graves are set in the deepest regions of the Pit,and her company is all around her burial place.All of them are slain, fallen by the sword—those who once spread terrorin the land of the living.

"""I'm going to give you a new heart, and I'm going to give you a new spirit within all of your deepest parts. I'll remove that rock-hard heart of yours and replace it with one that's sensitive to me.