What Prior Probability of Your Hypothesis Is Sure?

Many times, in the absence of heart and brain, am in any kind of activity measurable. And so it's near death because the person comes from it, but during those minutes while they're out, it's highly evidential. So i've been wanting to ask a historian this question for a long time. What is the earliest historical evidence we have of jews being thrown, criminals being thrown into a masked grave? Does it come at the time of nero, around 70 a d, or does it come before then?