The Splitting of the Sea Kriyas Yam Suf: Who, What, Where, When, Why?

(3) And Abraham rose early in the morning, and saddled his ass, and took two of his young men with him, and Isaac his son; and he cleaved the wood for the burnt-offering, and rose up, and went unto the place of which God had told him.

R. Bana'ah says: In the merit of the mitzvoth performed by Abraham I will split the sea for them, viz. (Genesis 22:3) "and he split the wood for the burnt-offering" — and here (Exodus 14:21) "and the waters were split"

Shimon of Kitron says: In the merit of the bones of Joseph I will split the sea for them, viz. (Genesis 39:12) "And he left his garment in her hand and he fled." And it is written (Psalms 114:3) "The sea saw and it fled, etc."

(5) The deeps cover them— They went down into the depths like a stone.

(5) Like a stone: Elsewhere (verse 10), it says, “they sank like lead.” Still elsewhere (verse 7), it says, “it devoured them like straw.” [The solution is that] the [most] wicked were [treated] like straw, constantly tossed, rising and falling; the average ones like stone; and the best like lead-[i.e.,] they sank immediately [and thus were spared suffering].

And the difficulty of matching couples is as [that of] the splitting of the Sea of Reeds...

Nachshon ben Aminadav jumped, and descended into the water first.