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|Sixteenth Sign describes the wonders that took place before his prophetic mission, but which were related to it, called irhasat. They were of three kinds:| |
|The First Kind: The tidings of Muhammad’s (UWBP) prophethood given by the Torah, the Bible, the Psalms, and other scriptures.|[197](/letters/the-nineteenth-letter/8540/29/112/260#1972)|
|The Second Kind: Tidings of his coming given by soothsayers, and people known as saints and gnostics.|[209](/letters/the-nineteenth-letter/8540/29/112/260#2092)|
|The Third Kind: The wondrous events that occurred at the time of the birth of God’s Messenger (UWBP).|[213](/letters/the-nineteenth-letter/8540/29/112/260#2132)|
|Seventeenth Sign: The Messenger’s (UWBP) own self|[217](/letters/the-nineteenth-letter/8540/29/112/260#2172)|
|Eighteenth Sign: The greatest miracle of the Messenger (UWBP), the All-Wise Qur’an. It consists of three points describing aspects of the Qur’an’s miraculousness|[219](/letters/the-nineteenth-letter/8540/29/112/260#2192)|
|Nineteenth Sign: Fifteen principles indicating the integrity, and veracity of the Prophet (UWBP), the most conclusive proof of divine unity and eternal happiness.|[228](/letters/the-nineteenth-letter/8540/29/112/260#2282)|
|FIRST ADDENDUM TO THE MIRACLES OF MU-HAMMAD (UWBP): The Nineteenth Word, proving decisively Muhamad’s (UWBP) messengership|[234](/letters/the-nineteenth-letter/8540/29/112/260#2342)|
|SECOND ADDENDUM: About the Miracle of the Splitting of the Moon. Refuting objections made to the miracle in the name of science, it demonstrates that there was nothing to prevent its occurrence, and proves it clearly|[245](/letters/the-nineteenth-letter/8540/29/112/260#2452)|
|THIRD ADDENDUM: About the Messengership of Mu-hammad (UWBP), this is a concise index-like answer to the question: “Why was the Ascension particular to Muhammad the Arabian (UWBP)?”|[250](/letters/the-nineteenth-letter/8540/29/112/260#2502)|
|FOURTH ADDENDUM: The Sixteenth Degree from The Supreme Sign, about Muhammad’s (UWBP) Messengership|[254](/letters/the-nineteenth-letter/8540/29/112/260#2542)|
|THE TWENTIETH LETTER contains two stations and an introduction, and expounds the verse, “So know there is no god but God,” and the eleven phrases of the Hadith: “There is no god but God, He is One, He has no partner etc.” The first station points out the good news contained in each phrase, and the second demonstrates with powerful proofs the degrees of the true affirmation of divine unity.|[261](/letters/the-twentieth-letter/8684/29/261/302#2612)|
|ADDENDUM TO THE TENTH PHRASE OF THE TWENTIETH LETTER: That is: “And He is Powerful over all things.” It points out through three comparisons that when all things are attributed to divine power, they become as simple as one thing, and if they are not and are ascribed to things other than Him, each becomes as difficult as all things|[298](/letters/the-twentieth-letter/8684/29/261/302#2982)|