But Luke describes the "strange dichotomy" between his "cool guy" dad, armed with his Stratocaster guitar, and the church. In Luke's childhood home, he had a Nintendo, and the family would listen to the music of Neil Young and watch surf movies Mike had brought over with him from Australia. "I never saw Dad crack open a beer, there was no real partying. It was really straight-edge.
"You've got this charismatic, olive-skinned Australian-Croatian in Bristol of all places and the church was filled with genuine, honest, just working class people, that saw Dad's message to be refreshing. Dad was such an amazing speaker and he was charismatic, but in a really genuine way. Dad always cared for people."
Ultimately Luke talks about the "beauty" of his childhood, and the way his dad would go out to sit in the back shed with the family's pet guinea pig, Sausage, at night. "It's amazing to grow up thinking that you're on this grand mission," he says.
But by the time he was about 16, he felt constrained by the church's rigid structure. It seemed incompatible with the "natural human impulses", like an emerging sexual desire, of adolescence. Members of the faith could only date within the assembly, and like other Christian denominations, sex before marriage and masturbation was considered a "sin": "Anything sexual outside of marriage was just like the devil.
"I thought I could pray them away, but they weren't going anywhere. I was like, What do I do? I wanted more than anything for [his religion] all to be real . . . You collide with this impassable truth that perhaps some of the things that you believed to be true, your model of religion or your model of God, might need to be re-evaluated."