Midrasch zu Schoftim 5:26

At Thy rebuke they fled (ibid.). When a man sees that his winepress is filled with grapes, and that his vineyard is ready for cutting, others may ask him: “What will you do with these grapes, since the vat is too small to contain them?” What does he do? He treads down the grapes in the vat and then puts in the new grapes. Then it is able to contain all his grapes. Similarly, though the entire world was submerged under water, the Holy One, blessed be He, declared: Let the dry earth appear (Gen. 1:9). The water thereupon cried out: “Though we fill the entire world, it is cramped for us. Whither shall we go?” What did the Holy One, blessed be He, do? He trampled upon the ocean⁴Normally the Mediterranean, but in this instance, as indicated a few lines below, the Dead Sea. and slew its prince,⁵See Ginzberg, Legends of the Jews 5:26, Bava Batra 74b Leviathan was a legendary sea animal destined to be eaten by the righteous in the future. as it is said: He stirreth up the sea with His power, and by His understanding he smiteth through Rahab (Job 26:12). Smiteth is an expression that indicates slaying, as it is said: And with the hammer she smote Sisera, she smote through his head, yea, she pierced and struck through his temple (Judg. 5:26). The seas mourn (bohin) to this very day because He slew the prince of the sea, as is said: Hast thou entered into the springs (nibhe) of the sea? (Job 38:16). Why did He slay him? Because a house that can accommodate a hundred living people can contain a thousand dead. That is why the ocean is called the Dead Sea. Ultimately, however, the Holy One, blessed be He, will heal it, as it is said: When they shall enter into the sea of the putrid waters, the waters shall be healed (Ezek. 47:8). When the other waters observed that the Holy One, blessed be He, had trampled upon the ocean, they fled from the loud cries of their fellow-waters, as it is said: At Thy rebuke they fled, at the voice of Thy thunder they hastened away (Ps. 104:7).

"upon your hand": This is the left hand. You say this, but perhaps it is the right? Though there is no proof for this, it is intimated in (Isaiah 48:3) "My hand has also founded on earth, and My right hand has spanned the heavens," and (Judges 5:26) "Her hand reached for the tent pin, her right for the workmen's hammer," indicating that "hand," unqualified, is the left hand. R. Yonathan says (Devarim 6:8-9) "and you shall tie them … and you shall write them": Just as the writing (of the mezuzah) is with the right hand, so, the tying of the tefillin (on the left hand). Abba Yossi says: We find the right to be called "hand," and even though there is no proof (for its application here), it is intimated in (Genesis 48:17) "that his father placed his right hand." And what is the intent of "upon your hand"? To include an amputee (of the left hand), that his tefillin are placed on his right arm.

"That the Torah of the Lord be in thy mouth" -- to exclude women [from tefillin]. What is exemplary about tefillin? They are a positive time-triggered commandment from which women are exempt. So too, are women exempt from all positive time-triggered commandments.