Post Malone and Justin Bieber's relationship is well documented. Though it's gotten a little testy at times, the two remain good friends to this day. Even through rumors the pop star is caught up in a cult-like religion.

The "White Iverson" rapper recently chopped it up with Rolling Stone where he claims the Biebs, whom he calls "a fucking awesome, great dude" and "a genuine friend," is in so deep he is forking over millions of dollars to the institution.

"It's a total cult," Malone says, referring to Hillsong, a megachurch that Bieber is a member of. "He's already given them, like, $10 million. Those are the worst kinds of people. I used to be super-religious. I believed in God. But now I see through it. It's nice to support something you believe in, I guess, but people are spending so much money, and God doesn't care that your church has a fucking gold roof."

A source close to Bieber denies he's donated that much money to the church.

During the interview, Malone also reveals his extensive gun collection which includes a M14 "the gun Navy SEALs use," a Walther PPK – "James Bond's gun," a .44 Desert Eagle, M1911 pistol, two gold-plated Glocks, Cobalt AR-15, pump-action Mossberg shotgun, Glock 19 and an FN Five-Seven pistol fitted with a laser sight. "I have a lot of valuable shit. I have a lot of friends I wanna protect," he gives as an explanation for having the cache.

In music-related news, Malone is putting the finishing touches on his sophomore album. The project boasts guest spots from Nicki Minaj, Ty Dolla $ign, John Mayer and Tommy Lee. "I'm trying to push the genre," the Texas MC says.

The latest single off the new album, "Rockstar," featuring 21 Savage, recently reached platinum status.

Here Are 19 Rappers Going Platinum in 2017

More From KYYW 1470