The Torah uses a specific word to describe the passing of the Jewish people through the Red Sea: “passed through the sea into the wilderness” (Num 33:8). The word for “through” is transliterated as “b’soch,” and it would seem to be an odd choice.
But if we look at the way the text uses that word earlier in the Torah, we see it is first found on the second day of creation: “God said, “Let there be an expanse in the midst of (“b’soch”) the water, that it may separate water from water.” (Gen 1:6)
The connection between these two uses of the same word tells us a great many things. G-d separated the waters (heavens and oceans) to create the world; he separates the waters of the Red Sea to create the Jewish People. Life is created in the gap between those waters, both at the creation of the world and at the Exodus. In the first b’soch the gap is created vertically. In the Exodus b’soch the gap is created horizontally. It is a different creation, in a different dimension – but the parallels are undeniable.