You're hearing voices, right? You should really reconsider and tell someone about this. Suicide is a very serious and permanent choice, and you really shouldn't make it ever, especially if you're not in the right headspace.
This is a bit presumptuous—so correct me if I'm wrong—but you believe in the afterlife, right? Otherwise nothing is "eternal." If you believe in heaven and hell, you should know that committing suicide would land you in hell, should either exist in the first place. If you really think you're going to experience eternal suffering either way—I promise, you won't—what's the difference if you just wait and tell somebody?
In any case, I hope you're okay and find peace.