explaining how to prove the existence of god in nahjul balaqah's view in comparison with the holy quran

theology has always been one of basic and essential topics in the holy quran and imam's quotes. there are many examples – especially in the speeches of imam ali (as) – which is explaining different ways of theology. most important of these ways are the nature, the intellectual-sensorial method and the intellectual-philosophic method. since the most valuable book for constructing man's life and his guidance after quran is nahjul balaqah and the reflection of the verses of the holy quran is obvious in every part of it, we come to explain the ways to prove the existence of god in nahjul balaqah and then compare it with the ways explained in the holy quran by library method and descriptive and analytical methods in data analysis. the results show that sometimes man can believe god by his innate wisdom. besides, the basis of the creatures is this fact that the universe is subjected by a supernatural essence and thus the existence of god can be proved with intermediates that are some intellectual principles proving the necessity of existence of god.