Discussion source from this screenshot from the same user
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https://origin.web.fordham.edu/halsall/source/christ-muslim-debate.asp
Discussion source from this screenshot from the same user
https://origin.web.fordham.edu/halsall/source/christ-muslim-debate.asp
Old religious debates were usually dry as rightwing jokes but sometimes they made up the rules as they go and everything ended with them literally trying to bash the other dude skull with a bible.
Most famous occurence was allegedly when St Nicholas (yet, that Saint Nicholas a.k.a. Santa Claus) thrashed the bishop Arius face during First Council of Nikea.
I understand the bashing of skulls or faces, it's a lot more logical than whatever the discussion in the image is, never listen to royalty