The definition of a thing includes its efficient cause; and since God is the Primal Cause, He cannot be defined, or described by a partial definition… - Moshe ben Maimon

After a long time the great and awful Name was forgotten and the people, men, women and children, only recognized an image of wood or stone and the temple of wood or stone which they had been brought up from infancy to serve by bowing down.

When [ Abraham ] the "Pillar of the World" appeared, he became convinced that there is a spiritual Divine Being, which is not a body, nor a force residing in a body, but is the author of the spheres and the stars; and he saw the absurdity of the tales in which he had been brought up. He therefore began to attack the belief of the Sabeans, to expose the falsehood of their opinions, and to proclaim publicly in opposition to them, "the name of the Lord, the God of the Universe" (Gen. xxi. 33), which proclamation included at the same time the Existence of God, and the Creation of the Universe by God.

Maimonides was a zealous disciple of Aristotle, although the theory of the Kalām might seem to have been more congenial to Jewish thought and belief. The Kalām upheld the theory of God’s Existence, Incorporeality, and Unity, together with the creatio ex nihilo. Maimonides nevertheless opposed the Kalām, and, anticipating the question, why preference should be given to the system of Aristotle, which included the theory of the Eternity of the Universe, a theory contrary to the fundamental teaching of the Scriptures, he exposed the weakness of the Kalām and its fallacies.