The interesting thing about the 7 thunders was that John was told not to write what they said down. Yet, this will one day be revealed. The same goes for what Jesus wrote on the ground with His finger as it was not stated what exactly was written while the crowd was ready to stone the woman caught in adultery. Until what was said by the 7 thunders and what was written by Jesus is revealed the complete Word of God remains a mystery. This information could change the whole dynamic of scripture but certainly not in a way that it was inspired to be written but rather in how it is to be understood. Of course, this is just simply my opinion on the matter. Very interesting indeed.