Semantic of Ezhar in Quran

This research focuses on the analytic-descriptive investigation of the word "ezhar"or " explanation" by scrutinizing its cognates. The root of "ezhar" is "al_zahr" which means " clarity" opposite the word " covert and ambiguity". However "ezhar" causes this clarity. This can be clearly associated with the words " prophet", "religion", " extinguishing", and" completion". Religion explanation is the prophets' responsibility who is the vicegerent of God. However this is a multilateral responsibility, the cultural conquest is preferred to conquest by war and killing. Moreover this fact is illuminated by investigating the verses in Quran due to their cohesion and coherence. For instance the word"the great jihad" is used for reasoning with Qur'an and conquest over other religions and perverse beliefs and thoughts. The realization of God's promises are the prophet's followers. The supereminence of God's tradition is in a way that although the apparent conquest sometimes belongs to the athiests, the real and permenant honor and wisdom belongs to God. This reality is completely explained in the relationship between "explanation" and "conquest". As a result muslims are strongly aware that the resonsibility of religion explanation, due to its major importance, is the prophet's duty. Key words: predominence, dignity, conquest, Qur'an