Harputlu Ishâk Effendi (1803-1892) explains how the Bible - the true book revealed to Isa 'alaihis-salam - was distorted; how words that belonged to people were put into firstly written four Gospels; that the theory of trinity is erroneous; the belief of Tawhid (the unity of Allahu ta’ala) in Islam. Besides, a few very precious letters - a food of a soul by Muhammad Ma’sûm-î Fârûkî - take place. Information about Judaism, Torah and Talmud is also given.