Let's say 100 "prophets" predict my death at different years across a century. Statistically speaking, I will probably be dead by then. In that case, one of the "prophets" would be correct. Of course, this is an illustration of chance rather than divine inspiration.
Granted, this is over simplified, but over the course of tens of thousands of years, it is certainly probable that millions of "predictions" would come to pass. And with our natural tendencies to filter out excessive information, and pick out those bits which we are looking for, combined with the number of "prophets" over the course of time, and the custom of killing those who spoke of something that did not come to pass, and the vagueness and later clarifications of "prophecies" --- an "accurate" prediction is no longer a surprise to me.
Some people read their horoscope and are surprised when it's right. I look at it and try to think of a scenario that would have made it wrong.
The more you want to believe something, the more it appears to be true. This is called a delusion.