כי כאשר ראיתם את מצרים היום לא תוסיפו לראותם עוד וגו'. הבעל שם טוב ז"ל פירש כאשר ראיתם את מצרים היום לא תוסיפו לראותם עוד עד עולם. היינו הראייה שראיתם אותם היום היא גרמה לכם, שלא תוסיפו לראותם עוד עד עולם: (מצאתי כתוב)
And Moses said unto the people: Fear not, stand still, and see the salvation of the L-rd . . . for as you have seen the Egyptians today, you shall see them no more forever. (ibid. 14:13) That is, by seeing them today, you will cause it that you will never see them again.1The Baal Shem Tov teaches that all creation contains sparks of holiness that must be uplifted and returned to G‑d. Sparks can be redeemed by eating kosher food, using an object in a religious context, of even seeing a thing. On this verse, R. Tzadok HaKohen of Lublin (Tzidkas HaTzadik 105) explains that every time Moses saw Pharaoh, prior to each of the Ten Plagues, he removed a spark of holiness that was trapped in him. Now, when the entire Jewish nation beheld the Egyptians at the sea, they removed all the sparks of holiness that remained in them, without which, the Egyptians could not survive; therefore, nothing was left of them to see in the future. Unknown source
כי כאשר ראיתם את מצרים היום לא תוסיפו לראותם עוד וגו'. הבעל שם טוב ז"ל פירש כאשר ראיתם את מצרים היום לא תוסיפו לראותם עוד עד עולם. היינו הראייה שראיתם אותם היום היא גרמה לכם, שלא תוסיפו לראותם עוד עד עולם:
(מצאתי כתוב)
And Moses said unto the people: Fear not, stand still, and see the salvation of the L-rd . . . for as you have seen the Egyptians today, you shall see them no more forever. (ibid. 14:13)
That is, by seeing them today, you will cause it that you will never see them again.1The Baal Shem Tov teaches that all creation contains sparks of holiness that must be uplifted and returned to G‑d. Sparks can be redeemed by eating kosher food, using an object in a religious context, of even seeing a thing. On this verse, R. Tzadok HaKohen of Lublin (Tzidkas HaTzadik 105) explains that every time Moses saw Pharaoh, prior to each of the Ten Plagues, he removed a spark of holiness that was trapped in him. Now, when the entire Jewish nation beheld the Egyptians at the sea, they removed all the sparks of holiness that remained in them, without which, the Egyptians could not survive; therefore, nothing was left of them to see in the future.
Unknown source