וַיֵּ֨ט מֹשֶׁ֣ה אֶת־יָדוֹ֮ עַל־הַיָּם֒ וַיּ֣וֹלֶךְ יְהוָ֣ה ׀ אֶת־הַ֠יָּם בְּר֨וּחַ קָדִ֤ים עַזָּה֙ כָּל־הַלַּ֔יְלָה וַיָּ֥שֶׂם אֶת־הַיָּ֖ם לֶחָרָבָ֑ה וַיִּבָּקְע֖וּ הַמָּֽיִם׃
Moshe estendeu sua mão sobre o mar, e Hashem fez o mar recuar com um forte vento oriental durante toda a noite, transformando o mar em terra seca, e as águas se dividiram.
Rashi
ברוח קדים עזה BY A POWERFUL EAST WIND — i. e. by the east wind which is the most powerful of the winds. This is the wind by which the Holy One, blessed be He, exacts punishment from the wicked, as it is said, (Jeremiah 18:17) “I will scatter them as with an east wind”; (Hosea 13:15) “An east wind shall come, the wind of the Lord”; (Ezekiel 27:26) “The east wind hath broken thee in the heart of the sea”; (Isaiah 27:8) “He hath removed her with His rough blast in the day of the east wind” (cf. Mekhilta).
Chizkuni
ויבקעו המים, “the waters split vertically right down to the bed of the sea.” In Moses’ song of thanksgiving, one half of a verse speaks of the waters “freezing solid,” קפאו 15,8) ,תהומות) whereas the other half describes this as occurring בלב ים, “in the heart of the sea,” which appears to contradict the interpretation that the waters split vertically right to the bottom of the sea. We must understand that the sea at that point was flowing over its banks. (the sea in question was tonguelike, like a very wide river, say the Amazon river near its delta.) If the sea had not split all the way down to the bottom the Israelites would have literally have had to descend to that bottom on one bank and to climb out of it afterwards again. Therefore the process described occurred in three stages, so that near each bank (shore) the waters froze horizontally to facilitate the Israelites’ descending and subsequent ascending on the opposite side. The waters formed vertical walls for the Israelites from either side. The simile of לב ים, “heart of the sea,” used by Moses illustrated this as the human heart in a certain manner divides the torso from the head and shoulders above and the lower part including the legs below. As a result of this division, the Israelites could cross without having to descend or to ascend at all. The waters after freezing and becoming dry, were level with the two shores. This is illustrated by the author of a liturgical poem recited in most synagogues in the morning prayer of the last day of Passover, (in the repetition of the amidah on the quote: וברוח אפיך נערמו מים, commencing with the words: פנו כאן וכאן שליש רום מימות, “while one side of the highest waters reared themselves on each side the remainder became bound up to form a path for their footsteps.”Verses 19,20,21, each have 72 letters, each word starting a different letter of the Hebrew alphabet, the first and third verse has the first letter of each word in the normal sequence, whereas the second verse has as the first word the last letter of the alphabet proceeding in the reverse order. Rashi has explained in his commentary on the Talmud in tractate Sukkot, folio 45, on אנ׳י וה׳ו, how by reading the three verses when they are written one on top of the other in the order in which they appear in the Torah vertically when reading from the top down we get the 72 names of G-d (in a three lettered version each.) Moses employed these versions of the names of G-d as a means to split the sea. Seeing that at the beginning of this process Moses was mentioned in the Torah as initiating it, when we recite the hoshaanot on the seventh day of Sukkot when according to tradition the world’s water supply is determined in the heavenly regions. The second acronym is taken from the 37th word in the arrangement we discussed. We may learn from this mystical approach that the Torah credited both G-d and Moses with having had a share in this miracle. [Moses’ staff, and G-d’s East wind. Ed.]
Ramban
AND MOSES STRETCHED OUT HIS HAND OVER THE SEA; AND THE ETERNAL CAUSED THE SEA TO GO BACK BY A STRONG EAST WIND ALL THE NIGHT. It was His will, may He be blessed, to divide the sea by a strong drying wind, making it appear as if the wind dried the sea, something like that which is written, An east wind shall come, the wind of the Eternal coming up from the wilderness, and his spring shall become dry, and his fountain shall be dried up.69Hosea 13:15. He thus caused the Egyptians to err and then destroyed them,70See Job 12:23. The verse however reads, masgi (He increases) the nations, etc. Ramban interprets it in the sense of mashgi (He causes to err.) A similar usage of this verse appears in Rashi above, Verse 2. The source of this rendition of the verse is in the Mechilta, ibid. for because of this, they thought that perhaps it was the wind which made the sea into dry land, but that it was not the power of G-d that did this for the sake of Israel. Although the wind does not split the sea into sections, they paid no attention even to this and they followed after the Israelites into the sea out of their desire to harm them. This is the intent of the expressions: and I will harden Pharaoh’s heart;71Above, Verse 4. and they shall go in after them.72Verse 17. He hardened their hearts [so that each one] would say: “I will pursue my enemies and I will overtake them in the sea,73Psalms 18:38. See also further, 15:9. and there is none that can deliver out of my hand.”74Deuteronomy 32:39. They did not remember now [what they themselves had said], for the Eternal fighteth for them against the Egyptians.75Further, Verse 25.