Your arguments make no sense. Since I reject Universalism. And you cannot be reasoned with. It must only be according to your view.
How do you think one's name is gotten into the book of life? The only promise is one's name to never be removed, Revelation 3:5. 1 John 5:4-5.
If you reject universalism, you must therefore reject universal atonement/general redemption. Anything other is intellectual dishonesty on your part.
Reason with me from scripture not from a website.
Let's look at your verses, consider the context and see what they tell us.
Revelation 3:1-6
“And to the angel of the church in Sardis write: ‘The words of him who has the seven spirits of God and the seven stars. “‘I know your works. You have the reputation of being alive, but you are dead. Wake up, and strengthen what remains and is about to die, for I have not found your works complete in the sight of my God. Remember, then, what you received and heard. Keep it, and repent. If you will not wake up, I will come like a thief, and you will not know at what hour I will come against you. Yet you have still a few names in Sardis, people who have not soiled their garments, and they will walk with me in white, for they are worthy. The one who conquers will be clothed thus in white garments, and I will never blot his name out of the book of life. I will confess his name before my Father and before his angels. He who has an ear, let him hear what the Spirit says to the churches.’
This passage tells us two things. First, many of the saints had left Sardis and many in the church were not Christian at all.
Second those who were Christians had not fallen into heresy and God promised them they would never have their name removed from the book of life.
What this passage does not teach is the heresy that Christians could lose their salvation.
The names of the saints have been written down since before the foundation of the world.
1 John 5:1-5
Everyone who believes that Jesus is the Christ has been born of God, and everyone who loves the Father loves whoever has been born of him. By this we know that we love the children of God, when we love God and obey his commandments. For this is the love of God, that we keep his commandments. And his commandments are not burdensome. For everyone who has been born of God overcomes the world. And this is the victory that has overcome the world—our faith. Who is it that overcomes the world except the one who believes that Jesus is the Son of God?
This passage clearly teaches particular redemption. I have no idea how one could read it any other way. "Everyone who has been born of God" brings us back to John 3 and Jesus dialogue with Nicodemus. God does the work of making us born again.
Tell me how universal atonement/general redemption is extrapolated from these two passages.