Billie Eilish was "super religious" for years.
The 18-year-old singer wasn’t raised with strong beliefs but was "incredibly" interested in the subject for a long time until her faith suddenly "completely went away".
Speaking on her ‘me & dad radio’ podcast with her father Patrick O’Connell, she said: "I don’t know if any of you know — I don’t think I’ve ever talked about it. When I was little, when I was a little kid, I was super religious for no damn reason.
"My family never was religious. I didn’t know anyone that was religious. And for some reason, as a little girl, I just was incredibly religious.
"And then at one point, I don’t know what happened. It just completely went away."
The shift suddenly made the ‘bad guy’ singer "almost anti-religious for no reason also", but she learned from her adjustment in her beliefs and thinks her own experiences have made her a much more open-minded person when it comes to faith and religious views.
She continued: "I don’t know why that happened. I don’t know what made me that way. And then after that period of my life, I’ve loved the idea of other beliefs.
"And I think people with closed minds, people like me from a couple years ago — I think that’s very pathetic to have a closed mind. It’s very lame. I love hearing people’s beliefs.
"And I love talking about what people believe in and hearing why they believe in it and what makes them believe in it.
"And especially if I don’t agree, because I like to listen and I like to understand. And I think it’s really important to be supportive of all beliefs in the world and all opinions and not shoot people down for what they believe in."
Billie is now in a "very neutral" position when it comes to religion.
She said: "I don’t, not believe and I don’t do believe. I’m in a very neutral position. I’m open to every belief pretty much.
"[I love] the idea that there’s a God. So why not? How would I know? I’m not going to say I know I don’t, nobody knows."
The ‘everything i wanted’ singer’s father thought it was "pretty marvellous" that she developed her own beliefs without influence from her family.
Patrick said: "From my point of view, as a parent, we did not go to church and we didn’t really talk about religion at all. And wasn’t in our household very much. And you just … believed.
"You had all these kind of organised thoughts about the whole thing. And I thought it was pretty marvellous. I didn’t object to it. I didn’t say you can’t believe that."