Out of Nothing God Made Heaven and Earth
7 And whence and in what manner was this, unless from You, from whom are all things, in so far as they are? But by how much the farther from You, so much the more unlike unto You; for it is not distance of place. You, therefore, O Lord, who art not one thing in one place, and otherwise in another, but the Self-same, and the Self-same, and the Self-same, Holy, Holy, Holy, Lord God Almighty, did in the beginning, which is of You, in Your Wisdom, which was born of Your Substance, create something, and that out of nothing. For Thou created heaven and earth, not out of Yourself, for then they would be equal to Your Only-begotten, and thereby even to You; and in no wise would it be right that anything should be equal to You which was not of You.
And anything else except You there was not whence You might create these things, O God, One Trinity, and Trine Unity; and, therefore, out of nothing You created heaven and earth—a great thing and a small, because You are Almighty and Good, to make all things good, even the great heaven and the small earth. You were, and there was nought else from which Thou created heaven and earth; two such things, one near unto You, the other near to nothing, — one to which You should be superior, the other to which nothing should be inferior.
Source: Confessions (New Advent)