This document analyzes mysterious letters in the Qur'an known as huruf al-muqatta'at, which are unique combinations of letters that begin certain chapters, emphasizing their significance as part of the Qur'an's miraculous nature and its preservation from distortion. The study compares the Qur'an to other revealed scriptures, highlighting its unique characteristics, such as its inimitability, comprehensive guidance for humanity, and complete memorization by followers, which ensure its authenticity and purity. Furthermore, the article illustrates that the Qur'an's distinctiveness lies in its unaltered state throughout history, as opposed to earlier scriptures that suffered various distortions.