What's the real story, JB?!

Justin Bieber was barraged with questions about why he canceled his tour yesterday after grabbing sushi at Sugarfish in Beverly Hills, but he's staying pretty silent on the matter.

Some sources are claiming that the singer is simply burned out by the hectic travel schedule, while others are suggesting that his close relationship with pastor Carl Lentz and his increasing interest in spirituality and Hillsong church contributed to the decision.

"Justin's decision to cancel was very last minute. As of Friday, he was still ready to go, but Sunday night he changed his mind. He didn't want to go. Members of the Hillsong Church [in New York City] said he didn't have to go and that God will protect him," an insider dished to Us Weekly.

"He found the world tour to be really challenging. He was't able to have any routine. He shouldn't have gone on a world tour that size because he's just exhausted. He just didn't want to do it anymore. People around him didn't think he was going to finish it and knew from the start this was very ambitious for him," another source added.

TMZ has been reporting that The Biebs pulled the plug on his work commitments because he wants to focus on rededicating his life to Jesus Christ. The "Sorry" crooner has been attached to pastor Carl Lentz at the hip, and apparently has had a recent spiritual awakening that's causing him to question everything.

"The church didn't tell Justin to cancel the tour. He made his decision based on spiritual soul-searching and his own view of the path in life he should be taking," a source told the site. "He's becoming the Tom Cruise of that church," the source added.

Let's hope the Purpose tour wasn't torpedoed by fanaticism!