This idea I find quite interesting. So you would say everyone is in Christ as long as they don't reject Him, compared to everyone being lost unless they willfully choose to follow Christ? Thats a very positive idea.
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No. Even an unispired poet knew the truth of existence, "in Him we live and move and have our being"; and Paul agreed because the Word of God treaches us that truth. No one is in the blackness of darkness called the second death, yet, and every seed born in Adam is "lighted by the Light that lights every Adam soul who comes into their being".
The names in the Book of Life are those who are called in Christ, and by the Atonement, each soul in that book is atoned for, as an Adam seed. But that does not grant new garments of second Man creation of the New Man name to them -in other words: the adoption is voluntarily received or rejected, by every soul that comes to the understanding of good and evil and chooses to seek the Light and so, to find the adoption into Christ.
It is the deeds done in the body that each Adam soul is judged for, at the judgment, and if one Adam soul comes to fruit and dies before any deeds can be written in the book of deeds, against them or for them, then that seed/soul is atoned for, and gets the regenerated body and will live forever, with Christ, in a regenerated body of flesh like His.
But if any seed comes to the age of accountability and rejects the Light, refuses to seek the Light, or finds and blasphemes the Light/Christ, then that one's name is blotted out of the Book of Life, and none of their deeds done in the unregenerated body are blotted out; and none of the deeds done in the Adam body can be counted for good for them, for nothing in Adam is good/pure or holy, and nothing done in Adam can be received before the Glory, because Adam souls, rejecting the LORD of Glory, and doing deeds called "good" by other Adam persons, is in the state the first father was in when he ate the fruit. seeking to make himself "wise" with wisdom of "self knowledge".
Adam is shut out of Eden so that his condition would not become permanent by eating of the tree of Life and living in the irreversible condition of being an outcast in the Lake of fire; and Adam was shut out so that each Adam seed could choose to seek the "Elect Life" and be born again into the New Man name, by the "once for all Atonement", which counts
backwards and forwards from its fulfillment, to cover all born in Adam.
Rejecting the Light that leads to the knowledge of Christ/Wisdom of God, makes one, still, unable to enter into God's Paradise.
To enter into that Kingdom of God, one must be born into the New Man name, by their own freewill, so that all the deeds done in the body, with understanding of will, against the Light/Christ, will be blotted out of the Book of deeds, for them, and nothing counted against them -as David rejoiced in the fact of.
By not being born again in Christ, none of the deeds done in the body are blotted out, and they cannot enter into the Kingdom of God's dear Son, who purchased/ransomed each soul for regeneration, by His own, dear, second Man "Kinsman" blood.
So all Adam will rise in their bodies, because the Atonement ended the curse of the body's flesh being separated from its soul; but not all Adam will enter into the Kingdom of God because they do not receive the Atonement that gives them the opportunity to be adopted sons of God in the New Man name, by seeking the Light that lights them from the time they come into the world.
Each soul is judged according to the Light they had, and sinned against, by Him who owns them, for that Light is Christ.
Whether one knows the name of the Christ come in flesh or not, they sin against that Light or they seek that Light, and will bejudged accordingly, by the secrets of their hearts being opened before the Judge, who is the Son of Man.
Each soul blotted out of the Book of Life loses all Light forever, and there is no remedy for those who lose the Light they had, and they can never receive more, as cast aways in the Lake of Fire; which Abyss is the "outer darkness", and the "blacknessof darkness forever".
God chooses us, by His will, but we must choose His Light, by our will.
We will either get our deeds done with our will, in Adam, blotted out of the Book of Deeds, or we will get our names blotted out of the Book of Life, by His will. He chooses us by His will, for His good pleasure,; but we must choose Him by our will. for His good pleasure.
This is what the Word of God teaches us. -Would you like the Scriptures listed, so as to study them for yourself?