1. 1

   The messages, despite their distant ages, nations and tongues, agree upon a single core: devoting worship to the Creator alone, and affirming the reckoning.

2. 2

   Their divergence occurred only in practical laws, which shift with the changing circumstances of nations, not in this doctrinal core.

3. 3

   Agreement in the core alongside difference in the branches is explained neither by collusion nor by coincidence, but by the oneness of the Sender.

﴿وَمَا أَرْسَلْنَا مِن قَبْلِكَ مِن رَّسُولٍ إِلَّا نُوحِي إِلَيْهِ أَنَّهُ لَا إِلَٰهَ إِلَّا أَنَا فَاعْبُدُونِ﴾

Agreement in the core across separated ages thus indicates a single source for the messages — a connected chain, not competing revelations.