The argument succeeds because you are already in a wager. You will die and you are currently wagering you won't have to pay for the wrong you've done. Death is the starting point. Now, the argument that this implies a certain answer is wrong because it is conscience that answers and if you give the wrong answer it was your fault you didn't investigate. As to the claim you can just not wager , that depends on you being able to not die. and good luck with that.
Pascal is trying to make you see that, because of death, you are ALREADY wagering. He now wants mind and will (conscience) to advert to that FACT. To say that this implies a Biblical answer is doubly wrong as St Paul points out most strongly: Romans 2:12, ESV: For all who have sinned without the law will also perish without the law, and all who have sinned under the law will be judged by the law.
Obviously , this wager must apply to every single human being or you (and not Pascal) are limiting its range
