As I said Hades is not Hell, and verse 14 should read "death and
Hades were cast into the Lake of Fire."
You need to examine the Greek translations. There are mistranslations in the KJV whether you like it or not. There are mistranslations in all versions that we need to examine.
ASV
And death and
Hades were cast into the lake of fire. This is the second death,
even the lake of fire.
AMP
Then death and
Hades [the realm of the dead] were thrown into the lake of fire. This is the second death, the lake of fire [the eternal separation from God].
AMPC
Then death and
Hades (the state of death or disembodied existence) were thrown into the lake of fire. This is the second death, the lake of fire.
CSB
Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
CJB
Then Death and
Sh’ol were hurled into the lake of fire. This is the second death — the lake of fire.
DARBY
and death and
hades were cast into the lake of fire. This is the second death, [even] the lake of fire.
DLNT
And death and
Hades were thrown into the lake
of fire. This is the second death— the lake
of fire.
ERV
And Death and
Hades were thrown into the lake of fire. This lake of fire is the second death.
ESV
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
ESVUK
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
EXB
And Death and
Hades were thrown into the lake of fire. The lake of fire is the second death.
GNT
Then death and
the world of the dead were thrown into the lake of fire. (This lake of fire is the second death.)
HCSB
Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
ICB
And Death and
Hades were thrown into the lake of fire. This lake of fire is the second death.
ISV
Death and
Hades were thrown into the lake of fire. (This is the second death—the lake of fire.)
JUB
And
Hades and death were cast into the lake of fire. This is the second death.
KJV
And death and hell were cast into the lake of fire. This is the second death.
LEB
And Death and
Hades were thrown into the lake of fire. This is the second death—the lake of fire.
MEV
Then Death and
Hades were cast into the lake of fire. This is the second death.
MOUNCE
Then · death and · Hades were thrown into the lake of fire. This is the second death, · the lake of fire.
NABRE
Then Death and
Hades were thrown into the pool of fire. (This pool of fire is the second death.)
NASB
Then death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
NCV
And Death and
Hades were thrown into the lake of fire. The lake of fire is the second death.
NET
Then Death and
Hades were thrown into the lake of fire. This is the second death—the lake of fire.
NIV
Then death and
Hades were thrown into the lake of fire. The lake of fire is the second death.
NKJV
Then Death and
Hades were cast into the lake of fire. This is the second death.
NRSV
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
NRSVA
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
NRSVACE
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
NRSVCE
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
NTE
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
OJB
And Mavet and
She’ol were cast into the Agam HaEish (Lake of Fire). This is the Mavet HaSheyni (the Second Death), the Agam HaEish (the Lake of Fire).
TPT
Then death and
the realm of the dead were cast into the lake of fire, for the lake of fire is the second death.
RSV
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
RSVCE
Then Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire;
TLV
Then death and
Sheol were thrown into the lake of fire. This is the second death—the lake of fire.
VOICE
Then Death and
Hades were cast into the lake of fire. This is the second death, the lake of fire.
WEB
Death and
Hades were thrown into the lake of fire. This is the second death, the lake of fire.
WE
Then death and the
world of the dead were thrown into the big fire. This fire is the second death.
YLT
and the death and the
hades were cast to the lake of the fire -- this [is] the second death;
I think I'll go with Hades on that translation. Even the NKJV says Hades. I only use about nine of these versions including the KJV, but when I'm stuck on something, I check the Greek, but since I don't have a PhD in Koine Greek, I leave it up to hundreds of scholars (probably up to 70 per version translated)who have done the work for us. Oh and btw, my Avatar is the cover of my book, "Hell ... If I Know" based on 570 scriptures and eight Bible versions. This doesn't make me right, it just means I've spent some time on the subject.