How do you figure? Books have been added and removed for millennia.
That’s just demonstrably false, or a massive misrepresentation at best.
The 27-book canon of the New Testament (and the wider 66 book canon of the Bible) which contain the writings of Saint Paul that I was citing is accepted by every Christian denomination. They have never been under dispute as part of the canon and was solidified, done and dusted by the end of the fourth century (despite us having plenty of evidence of those books being used by the start). While it is true some denominations may have additional books, as well as additional creeds and other important texts, rulings or councils, they all can agree on these 66 books.
Your own sect is not the arbiter of the entirety of the faith. Plenty of sects would disagree with what you’ve written here.
Like what sects? The Nicene Creed (typically this is used as the measuring point between Christianity and heretical spinoff religions) states:
He will return in Glory to judge both the living and the dead, and His Kingdom will have no end.
And even then if you went into the other religions that identify as Christian - such as Mormons, Jehovah’s Witnesses, or Christadelphians - they all also hold to the doctrine of there being a Judgement. Heck, this doctrine even made it’s way into Islam!
Sure, different denominations and different religions have different views on what exactly will happen on this judgement day or how exactly it’ll play out, but the fact of the matter is, it is a fact of Christianity that there will be a Judgement, and that carrying out Justice is one of God’s characteristics.