We began with the first three words of “Modeh Ani,” acknowledging our awareness that we are always in the presence of Hashem and that everything that comes our way during the course of the day ahead is from Hashem and for our benefit.
Then the tribe of Yehudah became His holy nation (for jumping into the threatening Yam Suf first), and klal Yisrael became under Hashem’s rule (and no longer under the Egyptians’ rule).
When klal Yisrael [the men] left from the land of Mitzrayim, (and) Beis Yaakov [the women] left from a people of a foreign language (that they did not understand)
The Yam Suf saw klal Yisrael going in and fled (split), (and at that time) the Yarden River (and all the waters in the world miraculously) turned backwards.