Philo: On the Creation

XI. (38) And after this, as the whole body of water in existence was spread over all the earth, and had penetrated through all its parts, as if it were a sponge which had imbibed moisture, so that the earth was only swampy land and deep mud, both the elements of earth and water being mixed up and combined together, like one confused mass into one undistinguishable and shapeless nature, God ordained that all the water which was salt, and destined to be a cause of barrenness to seeds and trees should be gathered together, flowing forth out of all the holes of the entire earth; and he commanded dry land to appear, that liquid which had any sweetness in it being left in it to secure its durability.

For this sweet liquid, in due proportions, is as a sort of glue for the different substances, preventing the earth from being utterly dried up, and so becoming unproductive and barren, and causing it, like a mother, to furnish not only one kind of nourishment, namely meat, but both sorts at once, so as to supply its offspring with both meat and drink; wherefore he filled it with veins, resembling breasts, which, being provided with openings, were destined to pour forth springs and rivers. (39) And in the same way he extended the invisible irrigations of dew pervading every portion of arable and deep-soiled land, to contribute to the most liberal and plenteous supply of fruits. Having arranged these things, he gave them names, calling the day, "land," and the water which was separated from it he called "sea."