Recently, the efforts of researchers and comparative religions specialists have focused on examining ways of humanism, peaceful coexistence, and religious dialogue. Such efforts motivate the looked-for dialogue and showing its dimensions and fields for the concerned parties. To achieve that, we need to the heritage books and references that roots the issues of religious debate, its cultural origins, and its theological ideas, as it focuses on highlighting the convergence and commonalities between religions. Undoubtedly, this authorial genre is rich of hundreds of manuscripts and books in different languages. Individual authors, who were the religious debaters, wrote these references, focusing on specific topics related to the sacred writings, religious rituals and their sacred symbols. This article aims to scholarly discuss “the Light of the Minds Guiding to Righteousness;” it is a manuscript that dates back to the 18^th century and existed in the Faculty of Divinity in Turkey. This article also aims to get a closer understanding of the ethics of defensive debate in this period and the motives of religious people converting to another religion.