Nemesius of Emesa

What we say is that God not only stands outside the power of all necessity; he is its Lord and Maker. For in that he is authority and the very source whence authority flows, he himself does nothing through any necessity of nature or at the bidding of any inviolable law. On the contrary, all things are possible to him, including those we call impossible. To prove this, he established once for all the courses of the sun and moon, which are borne on their way by inevitable laws, and forever and ever will be thus borne, and at the same time to prove that nothing is to him inevitable but that all things are possible that he may choose, just once he made a special “day” that Scripture sets forth as a “sign,” solely that he might the more proclaim, and in no way invalidate, that divine ordinance with which, from the beginning, he fixed the undeviating orbits of the stars.