I wasn't around 2015 years ago but i am pretty certain why didn't happen today in history was the son of God was nailed to a cross and died for us but as it is Good Friday and as the religious only have this holiday left after Christmas was stolen by a fat Laplander in a red suit with flying reindeer, we should let them have this one so i propose we revisit that day and we can thanks to the Bible.
The first bit is well known, long haired gent gets nailed to a cross between two criminals and sings a song about always looking on the Bright Side of Life but there was something else going on that day and we can look at Matthew 27:51-54 to see what that was.
Then, behold, the veil of the temple was torn in two from top to bottom; and the earth quaked, and the rocks were split, and the graves were opened; and many bodies of the saints who had fallen asleep were raised; and coming out of the graves after His resurrection, they went into the holy city and appeared to many.
Yes, graves opened and reanimated dead bodies left the ground to appear to the residents of the Holy City although it doesn't say how many there was or what they did once they got there.
They may have eaten the residents brains like normal zombies or they may have just wandered around taking in the sights and reminiscing about times before they died but i'd like to think they got together and performed a Thriller style dance act in the main street.
The 'grizzly ghouls from every tomb are closing in to seal your doom' is certainly more entertaining then the 'They not know what they do' speech which is usually associated with this time of year but they have yet to write this bit into the Jesus films that the vast majority of us will ignore this weekend while we stuff chocolate into our faces and watch the Wizard of Oz instead.