Ouija boards aren't always available in time.

It's almost as if it's a bunch of nonsense

🤷🏻‍♂️🤷🏻‍♂️ for me it's you believe in an all powerful omnipresent and all the other Omni deity that grants you entrance to an eternal afterlife and knowing the concept of humanity is born into sin and nothing we do truly makes us sinless combined with 'Once saved, always saved" why would this one sin prevent you entry? Some would argue cardinal sins or some sins carry more weight but all sin is equal. Humans give sin a tier system. Not God.

No. Being able to do that was why Martin Luther had the whole problem with indulgences.

You could pay the church to forgive a sin before committing it.

Basically for Protestants in particular you have to have suicide be a hellworthy offense. Because if the only single thing you need to do to get into heaven is to accept Jesus as your lord and savior, requiring nothing else and wiping away any past wrongs, then there is no incentive not to just immediately kill yourself afterwards and go straight to heaven. It would quickly devolve into a death cult. Don't want that cuz you can't grift them all out of money if they kill themselves.