Do you mean “not guaranteed that, given that hell exists, people who have never heard of it won’t go there”, or “not guaranteed that, given that hell exists and that people who have never heard of it won’t go there, it is equivalent to [the thing that should not be mentioned]”?
Do you mean “not guaranteed that, given that hell exists, people who have never heard of it won’t go there”, or “not guaranteed that, given that hell exists and that people who have never heard of it won’t go there, it is equivalent to [the thing that should not be mentioned]”?