In the summer of 2017, the singer Justin Bieber abruptly canceled the remainder of a concert tour that had taken him across six continents in 16 months. Mr. Bieber cited fatigue; his fans fretted. But on the tabloid website TMZ, a more hopeful narrative quickly emerged. The 23-year-old singer left the tour because he "rededicated his life to Christ" thanks to a pastor named Carl Lentz, leader of the New York City branch of the global megachurch Hillsong. The pastor and the pop star were inseparable, the gossip site reported. Two days later, the site reported that Mr. Bieber saw Mr. Lentz "as a 2nd father."