Giving you benefit of the doubt what You actually mean in the emboldened part above is that there is no extra scriptural proof of that claim … To say “there is no truth” as you have said is to say that it is a lie … And if it is a lie as you claim … You need to prove that it is. If you can’t prove it then that itself is the lie.
You say if God sent the same message everywhere there wouldn’t be so much confusion? … On what grounds is that statement being made?