Discourse analysis occupies substantial status in linguistics. It involves somewhat different theoretical and methodological approaches to analyze any text in language if it is verbal or nonverbal. This study is interested in investigating the discourse analysis of the Farewell Sermon of the prophet Muhammad (P.B.U.H) text. The farewell sermon has been analyzed according to the model of Van Dijk (1980) in terms of (Macro and Micro) structures. The text of the farewell is considered a descriptive, it divided into three major functional categories which are, the introduction, the development, and the termination or the end. Each part can be divided into macro and micro structures, and this micro structure in its roles can be divided into macro and micro structure or what we call it meta-macro, meta-micro structure. In addition, this study is to identify the units (topics) that the farewell sermon discourse consists of, and determine how these units are related to each other and contribute to the whole (Macro). It has been concluded that macro and micro structures work side by side in Harmon unit to form the sermon schema. As well as coherent work of micro structures or Mini structures, they are carrying the different functional, semantically, aesthetic and rhetorical styles which have been shown through using some words or short statements, and occasionally by using long statements in sermon.