But he knoweth
yada`  (yaw-dah')
to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially

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not that the dead
rapha'  (raw-faw')
lax, i.e. (figuratively) a ghost (as dead; in plural only) -- dead, deceased.

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are there and that her guests
qara'  (kaw-raw')
to call out to (i.e. properly, address by name, but used in a wide variety of applications)

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are in the depths
`ameq  (aw-make')
deep -- deeper, depth, strange.

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of hell
sh'owl  (sheh-ole')
Hades or the world of the dead (as if a subterranean retreat), including its accessories and inmates -- grave, hell, pit.New American Standard Bible
But he does not know that the dead are there, That her guests are in the depths of Sheol.

King James Bible
But he knoweth not that the dead are there; and that her guests are in the depths of hell.

Holman Christian Standard Bible
But he doesn't know that the departed spirits are there, that her guests are in the depths of Sheol.

International Standard Version
But he does not realize that the dead lurk there, and her invited guests wind up in the depths of Sheol.

NET Bible
But they do not realize that the dead are there, that her guests are in the depths of the grave.

Aramaic Bible in Plain English
And he does not know that mighty men perish in her presence, and all that are summoned to her are in the depths of Sheol; but do not tarry in that place, and do not let your eye be caught by her, for so you should pass by the waters of strangers and the river of foreigners, and from the waters of foreigners you should not drink, so that many days and years of life will be added to you.

GOD'S WORD® Translation
But he does not know that the souls of the dead are there, that her guests are in the depths of hell.

King James 2000 Bible
But he knows not that the dead are there; and that her guests are in the depths of the grave.Proverbs 9:18
Proverbs 9:18 NIV
Proverbs 9:18 NLT
Proverbs 9:18 ESV
Proverbs 9:18 NASB
Proverbs 9:18 KJV