It means that one is most certainly wrong. How would you suggest that we determine which one that is?
Through studying the scriptures, pondering their message, praying about them, and receiving a personal witness that they are true. How Can I Know This Is True?
Which scripture specifically? What makes that certain scripture valid? What does praying do that getting off of your ass and finding out the answer cannot do a whole lot faster? A personal witness heh... :bugeye: