i'm not talking about the intertestamental books of the bible (which were part of the septuagint bible used and quoted by christ and the apostles, you should know.) i'm talking about comparing different books within the pieces of the old testament that the protestants still adhere to. The old testament didn't fall out of heaven in one complete volume, you know. The torah was composed first, then the historical books, then the prophetic books. And many of these books were added to over time as more revelation came in from god--for example, the once rampantly polytheistic israelites became properly monotheistic, they eventually came to believe that sheol was not eternal and that there would be a resurrection of the dead, etc. The old testament was compiled over the course of centuries. Parts were being added to the books, and some books took on their fully-developed, modern form before others.
For example, in job 7, we see a statement that effectively denies the resurrection of the dead:
remember that my life is a breath;
my eye will never again see good.
8 the eye of him who sees me will behold me no more;
while your eyes are on me, i shall be gone.
9 as the cloud fades and vanishes,
so he who goes down to sheol does not come up;
10 he returns no more to his house,
nor does his place know him anymore.
And again in job 10:
18 why did you bring me out from the womb?
Would that i had died before any eye had seen me
19 and were as though i had not been,
carried from the womb to the grave.
20 are not my days few?
Then cease, and leave me alone, that i may find a little cheer
21 before i goand i shall not return
to the land of darkness and deep shadow,
22 the land of gloom like thick darkness,
like deep shadow without any order,
where light is as thick darkness.
and in isaiah 38, we see the same idea:
10 i said, in the middle[
d] of my days
i must depart;
i am consigned to the gates of sheol
for the rest of my years.
11 i said, i shall not see the lord,
the lord in the land of the living;
i shall look on man no more
among the inhabitants of the world.
...
18 for sheol does not thank you;
death does not praise you;
those who go down to the pit do not hope
for your faithfulness.
and top top that all off in 2 samuel 14:14 we see this statement: 14
we must all die; we are like water spilled on the ground, which cannot be gathered up again. but god will not take away life, and he devises means so that the banished one will not remain an outcast.
Iow, whoever dies cannot hope for god's mercy to bring them back from the dead. Sheol was eternal. There was no coming back from it. This was the original belief among the hebrews and the israelites. Only later did the belief in the resurrection of the dead develop, as god gave more revelation to the people of israel.
Wait, wait, wait. Are you talking about the intertestamental writings of the old testament, or the new testament gnostic apocrypha?