The laws for the bible are the same at the beginning of your post, but in your edit at the end open to interpretation.. erm, what?
True...but there are many countries in the world and not all secular laws are the same...but the laws in the Bible are the same no matter where you are.
Also...as far as secular law goes - all that matters is what can be "proven" - not what may have really happened.
As far as consequences, it's not really cut and dry is it as far as secular law. I mean, if you kill someone, it's not 25 years, it's a negotiation...based on circumstances and other things...maybe you get 10 years with parole in 5...maybe you get death row (again, depends on what country you live in)...maybe they say you were "insane" at the time so you get off Scot free. Maybe there was a mistake done by the police and the crown can't convict you at all.
Edit: Though the laws in the Bible are also open to interpretation - just like the punishment is for secular .
You criticise proof, but there's no better way of finding out the truth by those that weren't there than by what can be proven. Given your criticism surely you can think of something better?