As for the Miracle of the Sun, the fact that 70,000 witnessed it, religious and atheist alike, underscored the veracity of the message. According to one devotee, she [Our Lady] did this to underscore the fact that Fatima is one of the most important if not the most important message she has ever given in history."
Oh....you were talking about why the strong devotion to Fatima. I thought you were talking about the third secret. I’m off to get some coffee....provided the children don’t kill themselves first, sounds like I should investigate.