Justin Bieber shocked Londoners and tourists this week as he sat outside Buckingham Palace and sang worship songs as people passed by. 

Bieber grew up in a Christian home, and over the last few years has begun to publicly share about his faith.

This past Tuesday, tourists posted a video of Bieber performing "Good Good Father," the hit worship song by Pat Barrett and Anthony Brown.

The pop singer was in London with his girlfriend, Hailey Baldwin. Baldwin is the daughter of actor Stephen Baldwin, a well known evangelical Christian. 

This isn't the first time that Bieber has performed worship songs in public. Earlier this spring he performed a set of worship songs on the Sunday morning of the Coachella Music Festival in California. In 2016 at a concert in Paris, the Canadian pop star also performed "I Could Sing of Your Love Forever."

Bieber is close with well-known American pastor and author Judah Smith, and often shares quotes and excerpts from Smith's sermons on his social media.