Not at all, the Book isn't a sure fire way for everybody that is exposed to it becomes a believer. What it does say is, 'if you are a Gentile you are destined to be gathered to God before the lake of fire is the only other option' is how the plot goes.
If you die before you believe in God you go into a sleep that seems to last as long as one blink and then you wake yo at the Great White Throne where chastisement and mercy are the order of the day. After that all the ones gathered are given a drink of living water from the river found in New Jerusalem. They are the last to be gathered, the first ones gathered are at the start of the 1,000 year reign.
Re:7:9-17:
After this I beheld,
and,
lo,
a great multitude,
which no man could number,
of all nations,
and kindreds,
and people,
and tongues,
stood before the throne,
and before the Lamb,
clothed with white robes,
and palms in their hands;
And cried with a loud voice,
saying,
Salvation to our God which sitteth upon the throne,
and unto the Lamb.
And all the angels stood round about the throne,
and about the elders and the four beasts,
and fell before the throne on their faces,
and worshipped God,
Saying,
Amen:
Blessing,
and glory,
and wisdom,
and thanksgiving,
and honour,
and power,
and might,
be unto our God for ever and ever.
Amen.
And one of the elders answered,
saying unto me,
What are these which are arrayed in white robes?
and whence came they?
And I said unto him,
Sir,
thou knowest.
And he said to me,
These are they which came out of great tribulation,
and have washed their robes,
and made them white in the blood of the Lamb.
Therefore are they before the throne of God,
and serve him day and night in his temple:
and he that sitteth on the throne shall dwell among them.
They shall hunger no more,
neither thirst any more;
neither shall the sun light on them,
nor any heat.
For the Lamb which is in the midst of the throne shall feed them,
and shall lead them unto living fountains of waters:
and God shall wipe away all tears from their eyes.
Re:20:4:
And I saw thrones,
and they sat upon them,
and judgment was given unto them:
and I saw the souls of them that were beheaded for the witness of Jesus,
and for the word of God,
and which had not worshipped the beast,
neither his image,
neither had received his mark upon their foreheads,
or in their hands;
and they lived and reigned with Christ a thousand years.
Eze:47:8-12:
Then said he unto me,
These waters issue out toward the east country,
and go down into the desert,
and go into the sea:
which being brought forth into the sea,
the waters shall be healed.
And it shall come to pass,
that every thing that liveth,
which moveth,
whithersoever the rivers shall come,
shall live:
and there shall be a very great multitude of fish, because these waters shall come thither:
for they shall be healed;
and every thing shall live whither the river cometh.
And it shall come to pass,
that the fishers shall stand upon it from En-gedi even unto En-eglaim;
they shall be a place to spread forth nets;
their fish shall be according to their kinds,
as the fish of the great sea,
exceeding many.
But the miry places thereof and the marishes thereof shall not be healed;
they shall be given to salt.
And by the river upon the bank thereof,
on this side and on that side,
shall grow all trees for meat,
whose leaf shall not fade,
neither shall the fruit thereof be consumed:
it shall bring forth new fruit according to his months, because their waters they issued out of the sanctuary: and the fruit thereof shall be for meat,
and the leaf thereof for medicine.
The advantage of being gathered first is you get to live inside New Jerusalem and the rest make their homes outside of the wall of that City.
Or theological noncognitivism. Or non-theism (which is not considered the same as atheism. Depending on your definition of theism, deism would also be non-theistic but not atheistic.) It really depends on the theologian or philosopher you ask.
