You just got done telling me that, in fact, "whosoever" does mean everyone. That if you try to limit it to anything less than "everyone" it isn't "whosoever" any longer. What you just wrote contradicts that directly. Either "whosoever believeth" means everyone (because, according to your previous posts, you can't limit "whosoever") or "whosoever believeth" means ONLY those that believe. Those are the only two options.
It could say... "whosoever" that does not believe in Jesus is going to hell, and then after they have gone to hell they would no longer be "whosoever's". They would be people in hell.