You can't pay for this kind of publicity!

Justin Bieber took to Instagram to share a screenshot of his pastor Judah Smith's new religious book "How's Your Soul," and the singer has 130 million followers that probably jumped on Amazon to score their own copy.

The book promises to "explore what it looks like to cultivate a healthy soul in the midst of a busy life and points readers to the soul's only true home and place of rest and fulfillment: God," according to its description.

The "Sorry" crooner has been focusing on his faith this past year while taking a break from music, but he recently hinted that he's going to hit the recording studio and come out with some new tunes sooner than we think.

In other JB news, a new report claims he's in regular contact with ex Selena Gomez as he's concerned about her mental health.

"Turns out that Justin Bieber is still contacting Selena. It's not as shady as it seems because he's actually just really worried about her mental health after her breakdown, where she entered a rehab center. She's now out and things are looking good. He's still really concerned for her," a source told The Herald Sun.

We doubt his wife Hailey Baldwin would be cool with him being in constant communication with his ex, but who knows!