The holy Quran had a great effect on Arab literature and culture. The amount of this impact is considered as a criterion for the evaluation of texts. This impact is considered in two aspects: concepts that make the meaning rich، and form and structure that make the text elegant. No doubt due to the constant company of Imam Ali (AS) with the Prophet (S)، the true impact of holy Quran''s language in Arabic was in Imam Ali''s (AS) language and word. Thus his language in Nahjolbalagheh is the manifestation of Quran in Arabic Literature both in concept and structure. This makes Imam Ali (AS) the Imam and leader of eloquent people and his speech (Nahjolbalagheh) below the word of creator and superior to the word of creature. No human text is comparable with his text. This article، through comparing samples of the Quran''s verses and Ali''s (AS) speech، surveys the effect of Quran''s verses in structural aspects in particular choosing caste and structure of sentences.