In fact, the Watch Tower Publications Index includes the heading “Beliefs Clarified, ” which lists adjustments in our Scriptural understanding since 1870.
لِذَا تُخْطِئُ أَحْيَانًا فِي ٱلْمَسَائِلِ ٱلتَّنْظِيمِيَّةِ أَوْ شَرْحِ ٱلْكِتَابِ ٱلْمُقَدَّسِ .‏