Avicenna`s Philosophical Divinity: Affected by Farabi and Affecting the Philosophy of Henry of Ghent

In this article, using the comparative analytical method, we state that Ibn Sina in his metaphysical system is leading in philosophcal divinity. Analyzing existence per se, he proves the existence of the Necessary Existence. Then, by contemplating the existence of the Necessary Existence, he proves the Attributes of the Necessary Existence and, then begins to study the Necessarie`s actions. Relying on such an approach, while introducing Ibn Sina's intellectual model in the field of philosophical divinity, one may argues against those viewing him as being a theologian or being restricted to Aristotle philosophy. Finally, it ha been shown that to what extent Ibn Sina owes his philosophical system of divinity to Farabi and to what extent has affected Henry of Ghent, the christian philosopher of the thirteenth century?