It is known and accepted in the name of our Rebbe the Holy Chozeh of Lublin ZY”A, that he said as a symbol of the following Parshios. Parshas Bo is the first days of Pesach. Parshas Beshalach is the last days of Pesach. Parshas Yisro is Matan Torah – Shavuos. Mishpotim is Rosh Hashanah and Yom Kippur – days of judgement. Terumah is a symbol of Succos, as is the canopy of the Mishkon, so too the Sukkah is a temporary dwelling. Tetzaveh is Chanukah, Shemen Zayis Zoch (pure olive oil). Ki Sisoh is Purim, as Chazal say in Megilloh 13: “I preempted my Shkolim to the Shkolim of Homon.”
Chaim ViSholom
One might wonder, “What is the significance of this Remez?” The answer is: Firstly, “Kriyoh Mi’orer ess hazman” (the reading awakens the time – significance). Secondly, when one plants, there is plowing and seeding. So too, are the Parshios, for the coming Yomim Tovim. Thirdly, it is a Hachanoh (preparation) for the upcoming Yomim Tovim. May we be Zoche (merit) to prepare and celebrate the Yomim Tovim with a speedy Redemption from Golus, Omein, Kein Yihi Rotzon.
The Heilige Chozeh of Lublin ZY”A, quoted the Gemoroh (Kedushin 41) “Mitzvoh Bo Yoser MiBishlucho”, it is a greater Mitzvoh to come to ones Rebbe for Parshas Bo than Parshas Beshalach.
It is brought in Seforim, why did Hashem put a Yetzer Hora in a person – In order that he should have struggles and he should be constantly watching himself from the Yetzer Hora. And hence his reward will be greater. In contrast if he would not have a Yetzer Hora, his reward would not be as great.
Sefer Beis Aharon - Parshas Bo
אז עס גייט שווער טראגט מען גאלד
Karliner Tzaddikim ZY”A gave a Mashel (parable) to this. A wagon driver was with great effort driving his gold-filled wagon covered with a layer of hay to hide its contents. As this was a very tiring trip, he stopped on the road to rest. Thieves smelled their prey, emptied the wagon of its gold contents and filled it with hay. When the driver awoke from his sleep he continued to ride with great ease. This arose his suspicion and upon checking his cargo, all he found was light weight hay. To this it was said it goes hard we are carrying gold.
Reb Yom Tov Ehrlich Z”L - םיקידצ וננר