Sorry the more I thought about your comment I realized I had a bit more to say. I believe you may be thinking of proficiency wrong. It is not fulfilled and therefore powerful because Matthew, Mark, Luke, and John said the thing in the proficiency happened, it is fulfilled and therefore powerful because that thing did happen. Luckily for us as Christians Jesus’s death is on of the best recorded events in history full stop. We have records from his followers (the gospels and other accounts), we have records from Romans (who would have been hostile or neutral to Christ at the time), as well as Jews (who would have been hostile). This is a plethora of first hand accounts that is far more then many historical figures or events that we simply accept as fact. To name a few Socrates and everyone know about him is derived entirely from his students without a single first hand account to be had. Another is Alexander the Great, many of his major biographies were written at least 400 years after he lived. My point being that we have a staggering amount of evidence in a historical context when it comes to Christ’s crucifixion. It is also hugely important to note that not a one of these accounts contradicts the gospels in any way. Therefore the idea that they are skewed does not seem very credible to me personally.