{Revelation 20:5-6] (The rest of the dead did not come to life until the thousand years were ended.) This is the first resurrection. Blessed and holy are those who have part in the first resurrection. The second death has no power over them, but they will be priests of God and of Christ and will reign with him for a thousand years.
In the above verses "the rest of the dead" are referring to those who did not take part in the first resurrection, verse 4. These are the folks who never had a chance during their lifetime to know the "Word". During their next lifetime they will indeed be given the opportunity to understand God's plan (second chance) for them and they will choose between eternal life......or eternal death. If you think about it, many folks who do not understand the Bible and unfortunately have learned false doctrines during their lifetimes, never really had a first chance....did they?
[Then death and Hades (the grave) were thrown into the lake of fire. The lake of fire is the second death. If anyone's name was not found written in the book of life, he was thrown into the lake of fire.] [Revelation 20:14-15]
Your eternity is fixed at the moment of your death.
Are you certain of this?