Discourse generally refers to the context of language at the higher levels of the sentence. Discourse analysis is one of the tools for analyzing literary texts that examines the relationship between discourse-oriented structures and social views governing discourse production. Literary discourse analysis, as one of the branches of discourse analysis, examines and criticizes literary texts from the aspect of linguistic structures and textual context and their coordination with situational context. Literary researchers have generally studied the monotheistic sermon by focusing on independent language units and without considering the situational context of the sermon. They have tried to identify the tools that beautify this valuable work. So, current research aims to investigate the different structures of this sermon based on its situational context using an analytical descriptive method based on literary discourse analysis. The results indicated that according to the situation of the sermon which is about religious issues, and the need of the people for education and explanation of the epistemological issues, the different structures of the sermon are not just the tools to beautify the text, but tools to teach complex religious topics such as monotheism, the creation of the world, angels, and man, as well as the need to discuss prophecy, etc.