Wht does this mean "Naruto is the child foretold in the prophecy" when jariaya was fighting pein?

When Jiraiya was younger, the great toad sage foretold a prophecy about a child that would bring about a revolution in the ninja world, for the good. Jiraiya came to the conclusion that Naruto must be that child as 1. the toad sage said it was one of Jiraiya's students 2. because Naruto seems to have the ability to make friends no matter how little contact they have had beforehand. He has the ability to change people for the better.