God has introduced one of the miracles of the Last Prophet (PBUH) the Qur’an; the seal of divine books. This miracle will persist throughout the post-Prophet period; from the advent of the Prophet (PBUH) until the end of this world and the coming of Resurrection and the establishment of the Hereafter. But why did God determine one of His prophet’s (PBUH) eternal miracles as a book or speech? And commanded the Prophet (PBUH) and the Imams (AS) to communicate, preserve, teach, and interpret it? The proportion of the word and speech in the noble Qur’an; the miracle of the last Prophet, to his general audience is related to the rational development of man at a higher level than the past; a miracle that can exist forever in everywhere and in all circumstances for reason. All words, speech and the book, from words to combinations of words and from the scope of meanings to the real world, are related and connected to eternal divine knowledge, and authentic interpretation of the verses of the Qur’an is also referred to the infinite God-given knowledge of the Prophet (PBUH) and the Prophet’s successors (AS). To understand the aim of this book, audiences must always consider its miraculous status. Considering this matter makes it possible for the audience to benefit from its messages. When referring to the miraculous Qur’an, it is necessary to have knowledge of rhetoric, as a knowledge that includes linguistic, logic and epistemology. In this paper, the relationship between the miracle of the Qur'an as God's last book with the intellectual property of man is the basis of the necessity for knowledge of rhetoric to better understand this miracle.