It becomes more blatant by the day
“THE CHILLING ADVENTURES OF SABRINA – WITCHCRAFT INDOCTRINATION FOR KIDS”
https://beginningandend.com/the-chilling-adventures-of-sabrina-the-teenage-witch-witchcraft-indoctrination-for-kids/
A study of quotes from the early church on their beliefs on Genesis 6, fallen angels and the Nephilim giants.
http://beginningandend.com/what-did-church-fathers-believe-about-the-nephilim/
An article that basically explains all of the major occult symbols and their real meaning:
http://beginningandend.com/the-nephilim-and-the-great-secret-of-the-occult/
The whole idea of Jesus being a copy of pagan gods along with the Zeitgeist film have long since been debunked:
http://beginningandend.com/jesus-copy-horus-mithras-dionysis-pagan-gods/
I have to say as soon as I read the OP, I thought the story was fabricated. Biebs would be putting his life on the line with a statement like that. So far I see no corroborating stories and other sites are already saying it's fake. And that same site seems to have "broken' a very similar story...
And part of his "mentorship" required him to move in and live in Usher's house in Atlanta.
Which Diddy made Usher do at his penthouse in NYC when Usher was a teen.