Nah. Conventional wisdom says he can either
- the the priest all about it and do some chants
- find himself a baptizer and spend the rest of his time Jesusing real hard.
Johnny’s options will depend on his local wise man, but I suspect either way he’ll also be strongly encouraged to buy some merch.
Yes and no. While the rules are all made up, and different people can just make up more rules, the standard rules say that any deal with the devil, even this bet, is a sin, an unforgivable sin. Adding in the sin of pride, which means Johnny is unlikely to ever repent, and the devil got a soul.
Also, there’s a sequel song with a bunch of big names on the project, Johnny went down due to the sin of pride.
Christianity’s whole thing is that no sin is unforgivable (except deliberate rejection of the Holy Spirit’s work/testimony about Jesus (Mark 3:20-28))
Again, the rules are made up, but there are a dozen listed sins that are unforgivable. You just have to look for them.
However, a deal with the devil is automatically considered blasphemy against God, and thus an unforgivable sin. Add in the sin of Pride, and Johnny is damned.
