I was googling on the phrase "deceitful charlatans ". It turns out this kid was really turned off by Christianity. That passage I posted probably summed up his views - with death, killing, and all.
I suspect he read it along the way - but I have no evidence at this point in time.
It’s easy to get turned of by religion because of the hypocrisy. In most cases, all religions are shunned, especially the monotheistic ones.