The judges who heard Nephi’s prophecy also knew that five had gone to discover the truth of the prophesy. As the public ceremonies are in process, these judges become curious as to the five who were sent, as they should have some information that would be valuable. What the judges learn is that there are five who are in jail, accused of the murder. The coincidence of the number would be too great, and the judges would immediately know that it would be the five that were sent.