Many religious claim there are no false prophecies in the Tenach. A few prophecies they claim are at present unfulfilled, but they will be fulfilled someday. The focus of this post are the prophecies the religious claim have been fulfilled. Some religious argue that the virtual 100% success rate of Tenach prophecy is evidence of supernatural.
For the sake of argument I will accept the (questionable) religious claim above. That there are prophecies in the Tenach and they made predictions that were fulfilled.
There were numerous prophets in ancient Israel including many unknowns. No doubt they made numerous predictions/prophesies and no doubt many of them would be argued by the religious to have been fulfilled prophecies. Yet, it is also possible many of the numerous predictions/prophesies they made did not come true. What if the scribes and priests who were recording the prophecies only selected to record what they thought were prophecies that came true ? What if the canonization process only selected the prophecies the scribes and priests thought had come true. We would be left with a biased record of fulfilled prophecies, plus some prophecies that the religious claim are at present not fulfilled !
Thus the high prophecy success rate could be due to the biased recording and canonization process whereby the (thought to be) successes get written down and canonized. What were thought to be failures were not recorded. This created a biased data set of prophecies in the Tenach.
The religious may respond that the Tenach does record some false prophecies. If so, then this means Tenach prophecies contain failures not something the religious desire to argue. Also, it is possible the canonizers were unaware that the prophecy was really a failure. Thus the failed prophecies got recorded and canonized anyway.
The religious may claim there is a special category of prophecies that have come true after the canonization process and so my argument fails. My response is very few if any prophecies are known to fall into the special category. Besides those prophecies that allegedly fall into the special category are not amazing or fail the requirements for a valid prophecy.
There is no evidence the alleged extremely high prophecy success rate requires the invocation of supernatural. The high prophecy rate could be the result of a biased recording and canonization processes.