The number 666 came from ancient Babylon. In Babylon they numbered their
gods, and there were 37. The most feared god, the sun god was given the number
666, which was the sum of the numbers assigned to the first 36 (1 to 36).
There have been a number of popes, but all popes have received only one of 7
names, like Pius, John, Paul, Gregory, etc. Again, if we assign a number to
all the popes, starting with 1 for each name category, and add up all the
assigned numbers we get 665. (I didn't make this up, it comes from a reliable
source.)
The Satanists are fanatics about numbers, astrology, etc. This is telling us
that the next pope will be the anti-Christ!