Wis 19:7

“(Vers. 7.). For the cloud, namely given by God through the ministry of an Angel, their camp, namely of the Hebrews, overshadowed, "standing between their camp and the camp of the Egyptians, so that throughout the whole night they were unable to approach them," as is clear from Exodus fourteen. And from water, that is, after the water, just as when it is said: from morning comes midday, that is, after. From water, I say, which was there before, in the place through which they crossed, dry land appeared, namely dried by the blast of the wind, as is clear from Exodus fourteen. And in the Red Sea, namely divided, as is clear there; likewise in the Psalm: "Who divided the Red Sea into divisions"; a way namely appeared, without impediment, namely of water or mud, according to that word of the Psalm: "In the sea is your way," etc.; Habakkuk three: "You made a way in the sea for your horses"; likewise Isaiah fifty-one: (You made the depth of the sea a way, that the redeemed might cross over). And a sprouting field, that is, a level and delightful way, as through a sprouting field, from the exceeding deep, that is, after the exceeding depth of water previously existing there.”

“Field. Like a meadow, (Calmet) germinans, “growing grass.” (Septuagint) (Haydock) — Pliny ([Natural History?] xiii. 25.) attests, that “the Red Sea, and all the eastern ocean, are full of wood.” The Hebrews passed with as much ease as in a desert, (Psalm cv. 9., and Isaias lxiii. 13.) or place of pasture, while the sea seemed to be in quest of other channels. (Calmet) (Genesis i. 9.) (Haydock)”