When Joseph Smith sought access to the golden plates from the angel, he was initially denied and instructed to return annually on the same date to meet with the angel. After his first attempt, he asked why he was denied and was told to return a year later with his older brother, at which point he would receive the plates. Tragically, his older brother Alvin passed away two months after this directive.
Critics might interpret this as evidence of a false prophecy, while skeptics could see it as further proof that such religious claims are baseless.