In this essay, the topic which will be discussed is ,,The Metaphysical Beginings of Christian Philospohy.“ I have used the literature of few authors but the main author whose literature was used during writing of this essay is Étienne Gilson, and his book ,,Introduction in Christian Philospohy.“ He was a French philosopher who was born on 13 of June 1884, and died 19 September 1978. Also he was a historian of philosophy and a scholar of medieval philosophy. He originally specialised in the thought of Descartes, yet also philosophized in the tradition of Thomas Aquinas, although he did not consider himself either a neo-Scholastic or neo-Thomist philosopher. He was a member of French Academie and he was nominated for the Nobel prize in Literature. As we said his focus was on the philosophy of middle ages. Gilson finds medieval philosophy as a true rational philosophy based on rational arguments which even Descartes uses in his philosophical speculation. Of all medieval authors Gilson mainly sutdies st. Thomas Aquinas whose philosophy and metaphysics he deeply appreciates. Also, another author that we will refer to is Hrvoje Relja, a university professor in Split, and in Italy. We will refer to his books called ,,Tomistic Philosophy“ Volume 1., and Volume 2. Furthermore we will try to show metaphysical beginings of christian philospohy, and a method of understanding that metaphysical beginings of christian philospohy. To count shortly these metaphysical beginings of christian philospohy, they are - universal cause, participation, substance and accidents, essence and Being. Also, based on teachings of st. Thomas Aquinas we will try to explain how these metaphysical beginings of christian philospohy are in fact one, and united in the term of God. This essay also discusses term of christian philosophy, term of Absolute, the so-called ,,Secret of God's freedom“ in making the world, about creation ,,Ex nihilo“, and about the purpose and goals of man and the universe. All of these topics are based on medieval philosophy, and this essay is also a way to show medieval philosophy not as dark scholastic philosophy, but as enlightning, modern, purpose giving philosophy.