“Moses describes the special use of this expanse, to divide the waters from the waters from which word arises a great difficulty. For it appears opposed to common sense, and quite incredible, that there should be waters above the heaven. Hence some resort to allegory, and philosophize concerning angels; but quite beside the purpose. For, to my mind, this is a certain principle, that nothing is here treated of but the visible form of the world. He who would learn astronomy, and other recondite arts, let him go elsewhere. Here the Spirit of God would teach all men without exception; and therefore what Gregory declares falsely and in vain respecting statues and pictures is truly applicable to the history of the creation, namely, that it is the book of the unlearned. The things, therefore, which he relates, serve as the garniture of that theater which he places before our eyes. Whence I conclude, that the waters here meant are such as the rude and unlearned may perceive.” (John Calvin, source)
Notice that Calvin here rejects *both* the concordist and metaphorical reading.