And they saw streams of water. This was at the moment when God said to Moses (Exodus 14:16), "You, raise your staff." At that moment, all the wellsprings of the deep in the world were split open, even the water in jugs, pits, and barrels were divided. Woe to them, they saw streams of water, and the foundations of the earth were exposed. These are the seas. Rabbi Yudan said (Psalms 77:17), "The waters saw You." These are the upper waters. (ibid.) "The waters trembled." These are the lower waters. "Your rebuke." Rabbi Chanina said, "It is not really Your rebuke, but the breath of Your nostrils." As it says (Exodus 15:8), "At the blast of Your nostrils the waters piled up."