Or more accurately, the total absence of credible evidence to support either the idea of fortune-telling or the idea of the supernatural as aspects of reality rather than of human psychology.
Reasoned skeptical enquiry will go where the evidence goes rather than where faith or folktale go. Sometimes for example archeological and historical enquiry find evidence supporting this or that bible story, and sometimes they find evidence contradicting this or that bible story.
It appears to be the case that the only manner in which God and gods and supernatural beings exist is as concepts / things imagined in individual brains. For example God never appears, never says, never does, and exists in hundreds of thousands of incompatible versions across history and geography.
So you accept the prophecies of, for example, the Delphic sybil? Of Nordic religion? Or the psychics industry in the US and other Western countries?
After all, if it's possible for humans to know aspects of the future that can't be reasoned from existing evidence and trends, why would this talent be limited to one particular and ancient group?
As far as I'm aware, no believer has left an account of how prophecy actually works, just as there's no description in the bible or (as far as I can find) in theology of what is supposed to have actually happened when God says "Let there be light!" in Genesis. What processes were initiated by those words, such that the EM spectrum was brought into existence? How did the physics of "the heavens and the earth" work without the EM spectrum before this happened?
Or do you agree that this too is just folktale?
Oh, and what about these prophecies?
Mark 9:1 And he said to them, “Truly, I say to you, there are some standing here who will not taste death before they see that the kingdom of God has come with power.”
Mark 13:28 “From the fig tree learn its lesson: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near. 29 So also, when you see these things taking place, you know that he is near, at the very gates. 30 Truly, I say to you, this generation will not pass away before all these things take place.
Matthew 10:23 When you are persecuted in one place, flee to another. Truly I tell you, you will not finish going through the towns of Israel before the Son of Man comes.
Matthew 16:28 Truly, I say to you, there are some standing here who will not taste death before they see the Son of man coming in his kingdom.”
Matthew 24:32 “From the fig tree learn its lesson: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near. 33 So also, when you see all these things, you know that he is near, at the very gates. 34 Truly, I say to you, this generation will not pass away till all these things take place.
Luke 9:27 But I tell you truly, there are some standing here who will not taste death before they see the kingdom of God.”