When he was a boy living in Los Angeles, Lenny Kravitz was a member of the prestigious California Boys Choir, then rated one of the best boys' choirs in the world. While this experience certainly provided a young Kravitz with an incredible outlet for flexing his musical muscle, that's not all it offered the future Grammy winner. It also left him with a memorable encounter involving what he believes to be "the presence of God."

Back then, Kravitz and the other choir members followed a rigorous practice schedule. They trained all day and night, Kravitz says in an interview on "Oprah's Master Class: Belief Special," and the training eventually took its toll on his body.

"I got sick. I had the flu and I got sent to this infirmary where this other kid was," Kravitz says. "He and I were in this room together for days, getting checked on and getting better."

During those few days, the boy and Kravitz struck up a rather profound conversation.

"He's like, 'Do you know about Jesus Christ?'" Kravitz says. "I said, 'Well, I've heard of him, but what?'

"He starts telling me all about Christ and all this scripture and things, just talking to me and reading to me," Kravitz continues. "It's quite interesting because you have these two young boys just sitting there talking and having this great conversation about God and love and Christ."

Though Kravitz hadn't been raised in a particularly religious household -- his father 's family was Jewish and his mother was Christian -- Kravitz was deeply moved by the discussion with his fellow choir member.

"I can't explain it to you, but the presence of God was in the room," Kravitz says. "I'm talking about something really heavy and thick, and the two of us felt it. It was something that just kind of came over us. We were both crying because whatever this presence was, was so overwhelming that it just hit you in your spirit... We were having an experience with God."

That moment helped solidify Kravitz's belief that God is truly everywhere.

"The spirit, the being, the power that created me was right there with me," he says. "I didn't need to go to anybody to deal with God. It was just right there. It was a personal experience."

Profound moments of belief can happen in all types of circumstances. This weekend, Oprah Winfrey presents "Belief," a seven-night series that explores of the origins of diverse faiths and searches for the heart of what really matters by journeying to the far reaches of the world and places cameras have rarely been.

"Belief" premieres Sunday, Oct. 18, at 8 p.m. ET on OWN.

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