Шмот 14:29 Мидраш: Mekhilta DeRabbi Yishmael, Aggadat Bereshit, Midrash Tehillim & Midrash Tanchuma

R. Yehudah b. Betheirah says: The Holy One Blessed be He said to him: I have already fulfilled My promise to your father Abraham, viz. (Exodus, Ibid. 21) "and He made the sea into the dry land" (that He had promised to Abraham) (Ibid. 29) "and the children of Israel walked in the dry land (that had already been made) in the midst of the sea."

"And you, raise your staff": Ten miracles were performed for Israel at the sea: The waters were split and became like a dome, viz. (Habakkuk 3:14) "You split (the sea) for his tribes; the summit of its scattering raged to scatter me"; the sea became dry land, viz. (Exodus 14:29) "and the children of Israel walked on the dry land"; it became like tar (where the Egyptians trod), viz. (Habakkuk, Ibid. 15) "You led your horses in the sea, in the mire of many waters"; it (the water) became like crumbs, viz. (Psalms 74:13) "You 'crumbed' the sea with Your might"; it became like rocks, viz. (Ibid.) "You broke the heads of serpents (the Egyptians) on the waters"; the sea split into sections, viz. (Ibid. 136:13) "You split the Red Sea into sections," viz. (Ibid. 15:8) "and with the breath of Your nostrils the waters piled up"; they became like a wall, viz. (Ibid.) "the waves stood up as a wall"; He extracted for them sweets from salts, viz. (Psalms 78:16) "and He brought forth streams from a rock and brought down waters as rivers"; He froze the sea for them and it became like vessels of glass, viz. (Exodus 15:8) "The depths froze in the midst of the sea."

And the ministering angels were astounded (at Israel's survival), saying: "Idolators walking on the dry land in the midst of the sea!" And whence is it derived that the sea, too, was filled with fury against them? From (Ibid. 14:22) "And the water was to them a wall (chomah), on their right and on their left." Read it not "chomah" but "cheimah" (wrath). What is it that rescued Israel? "on their right and on their left." "on their right" — in the merit of the Torah that they were destined to receive, viz. (Devarim 33:2) "From His right hand, the fire of the Law for them." And "on their left" — (in the merit of) prayer. Variantly: "on their right and on their left": "on their right" — (the mitzvah of) mezuzah that Israel is destined to observe. "and on their left" — tefillin (worn on the left hand).