the meaning of the words for soul/spirit have been changed since the first century.
soul/nephesh meant living person to Jesus and his diciples
spirit/ruach meant breath as in the lifegiving force inside living beings.
sheol/hell meant the grave of mankind
You are going by greek philosophers meanings of such words. I'll stick with the original meanings of the words as Jesus used them back then....thats really the only way to understand what he meant when he said certain things.
i already did that.
Do you happen to have an ancient Greek Dictionary to confirm your claim to the ancient definition of Sheol and Hades being different than it is today?
I don't, but I do have these...
Dictionary.com
She•ol
   [shee-ohl] Show IPA
noun (in hebrew theology)
1.
the abode of the dead or of departed spirits.
2.
( lowercase ) hell.
World English Dictionary
Sheol (ˈʃiːəʊl, -ɒl)
— n
1. the abode of the dead
2. ( often not capital ) hell
[C16: from Hebrew shĕ'ōl ]
The Easton Bible Dictionary
Sheol definition
(Heb., "the all demanding world" = Gr. Hades, "the unknownregion"), the invisible world of departed souls. (See HELL.)
Merriam-Webster Dictioinary
Definition of SHEOL
: the abode of the dead in early Hebrew thought
Origin of SHEOL
Hebrew Shĕ'ōl
First Known Use: 1597
Dictionary.com
Ha•des
   [hey-deez] Show IPA
noun
1.Classical Mythology .
a.the underworld inhabited by departed souls.
b.the god ruling the underworld; Pluto.
2.(in the Revised Version of the New Testament) the abode or state of the dead.
3.( often lowercase ) hell.
World English Dictionary
Hades (ˈheɪdiːz)
— n
1. Greek myth
a. the underworld abode of the souls of the dead
b. Pluto, the god of the underworld, brother of Zeus andhusband of Persephone
2. New Testament the abode or state of the dead
3. informal ( often not capital ) hell
The American Heritage Cultural Dictionary
Hades
[Roman name Pluto]
The Greek and Roman god of the underworld and the ruler of thedead. Also called Dis. The underworld itself was also known to the Greeks as Hades.
Easton’s Bible Dictionary
Hades definition
that which is out of sight, a Greek word used to denote thestate or place of the dead. All the dead alike go into this place.To be buried, to go down to the grave, to descend into hades,are equivalent expressions. In the LXX. this word is the usualrendering of the Hebrew sheol, the common receptacle of thedeparted (Gen. 42:38; Ps. 139:8; Hos. 13:14; Isa. 14:9). Thisterm is of comparatively rare occurrence in the Greek NewTestament. Our Lord speaks of Capernaum as being "broughtdown to hell" (hades), i.e., simply to the lowest debasement,(Matt. 11:23). It is contemplated as a kind of kingdom whichcould never overturn the foundation of Christ's kingdom (16:18),i.e., Christ's church can never die. In Luke 16:23 it is mostdistinctly associated with the doom and misery of the lost. InActs 2:27-31 Peter quotes the LXX. version of Ps. 16:8-11,plainly for the purpose of proving our Lord's resurrection from thedead. David was left in the place of the dead, and his body sawcorruption. Not so with Christ. According to ancient prophecy(Ps. 30:3) he was recalled to life.
Merriam-Webster’s Dictionary
Ha•des
noun \ˈhā-(ˌ
dēz\
Definition of HADES
1: PLUTO
2: the underground abode of the dead in Greek mythology
3: SHEOL
4 often not capitalized : HELL 1a
See Hades defined for English-language learners »
Origin of HADES
Greek Aidēs, Āidēs, Haidēs
First Known Use: 1597
I believe that the words Sheol and Hades refer to Pit or grave in some instances in the Bible, but the words Sheol and Hades also mean the aboding place of the departed spirits.
There is a lot of evidence going in both directions that Sheol and Hades mean
1) The grave,
or
2) A dwelling place of departed spirits.
I do not see enough evidence to out rule one or the other.