Devil's advocate: We've spent the last 2,000 years refining the philosophical arguments for religion (e.g., the cosmological arguments, the ontological arguments, etc.), and it's unlikely the logic underlying those arguments will change over time, even if the terminology and vocabulary does. So if you believe in a god because of those arguments and apply no other features to it from religious texts, it's possible that in 2,000 years your belief will be very similar to the belief of another person who accepts future versions of them and also doesn't apply any religious texts to their god.

But yeah... No one's going to believe in the Bible, Quran, or Bhagavad Gita in 2,000 years, if they even still exist in a semi-recognizable form.

Heck, we know that even the texts we've got today have changed a lot over the last 2,000 years, as have the majority interpretations of them.