The mouse is therefore a creature of the divine Word and power; and it is, as I believe of an aqueous nature. Were it not a creature of the divine Word and power, it would have no natural form nor would its species be preserved. Whereas it has a form the most beautiful, in its kind; legs of such exquisite symmetry, hair so smooth, as to make it evident that it was created for a certain order of creatures by the Word of God. In the mouse therefore we admire also the creature and the workmanship of God. And the same may as certainly be said of flies. Concerning the disappearing of birds I have no certain knowledge. For it is not very likely that they retire into regions farther south. Indeed the miracle concerning swallows is known by experience, that they lie as dead in the waters during the winter, and revive at the approach of summer; which fact is indeed a great similitude and proof of our resurrection. For these are operations of the divine Majesty truly wonderful. Hence we see them, but we understand them not. And my belief is that although a single swallow may appear unseasonably, now and then, I doubt however whether it ever can be the case, such swallow is restored from its death-like state by God himself. Unto the creation work of the fifth day therefore belong all crawling, creeping and flying creatures; and all other creatures which move in any way in the air or the water. III. V. 21b and 22. _And God saw that it was good. And God blessed them._ Why did not God pronounce the Word of blessing upon the above inanimate bodies of his creation also? In those cases he only said, that the bodies which he had created pleased him, but he did not bless them. But when he comes to the generation and propagation of living bodies, then he institutes a new mode of their increase and multiplication. Hence the sun and the stars, as we see, do not generate from themselves bodies like unto themselves. But herbs and trees have this blessing upon them, that they grow and bring forth fruit. Still there is nothing in them like unto this present blessing, pronounced by God upon the living bodies.