The eternal life received through grace by faith does not exist apart from, nor outside, spirits,
any more than human life exists apart from or outside humans.
Eternal life is not some kind of object hanging out there that we move in and out of,
just as human life is not some kind of object hanging out there which a person moves in and out of.
Eternal life is Holy Spirit life within one's personal spirit reborn (raised) from spiritual death.
That life is immortal and does not die,
and if it simply departed from spirits who have received it,
where would it go since it can exist only in spirits,
as human life can exist only in humans?
Not only is your understanding of eternal life contra Biblical, it doesn't even make sense.