The question has been asked: Why do we call the holiday "Pesach"? It's named after the fact that Hashem "passed over" the homes of the Jews during Makkat Bechorot . But seemingly, that is just one small detail of a much bigger picture. Furthermore, why is this the only miracle described with the term יד חזקה —Hashem's "strong hand"? And why did Hashem choose to redeem us from Mitzrayim specifically in the month of Nisan? *While the Jews were enslaved in Mitzrayim, Egypt was the superpower of the world. They made it impossible—by natural means—for the Jews to ever escape. And in the words of the Zohar, they also used כישוף (sorcery) to cast a spiritual spell, so that even in the supernatural realms, they were unable to go free. The Rambam writes in his famous Iggeret Teman that when Moshe Rabbeinu began the process of extracting the nation of Israel from Egypt, all the astrologers agreed unanimously that the Jews had no chance for independence or even to alleviate their lowly state of subjugation. The Bet HaLevi adds another dimension to the slavery. He writes in Parashat Bo that there are many dimensions to the universe. Each dimension is on a different level, but they are all connected and exist parallel to one another. For example, the existence of fire as we know it in this world is entirely different in the dimension above, and the criteria for it to burn things there are different. When Avraham Avinu was thrown into the fiery furnace and was not burned, it was a great miracle. But this was a miracle only in our eyes. In the higher dimensions, there was no miracle whatsoever. A righteous individual should not be burned by fire. In that instance, the fire in the higher dimension acted as it should normally, and in the lower dimension, the fire was forced to act parallel to the higher fire. Whenever a miracle takes place for a righteous individual, the nature of the higher dimension alters the course of events in the lower dimension—even if that violates the laws of nature in the lower one. Regarding the miracles in Mitzrayim, however, it was very different. Over the two centuries that the Jews were there, they became severely corrupted by the idolatrous and immoral culture of Egypt. In their parallel existence in the higher dimensions, their fate appeared to be sealed—to remain enslaved there for all time. There, Hashem needed to violate the laws of nature in every dimension of the universe. This is why the Torah uses the term יד חזקה when referring to these miracles—a term never used for any other miracle ever performed. Hashem did not only redeem us from physical slavery; He also redeemed our souls in the spiritual dimensions as well. Through the total overthrow of the powers of Egypt, Hashem's supremacy over the world became apparent. The Aruch HaShulchan explains why Hashem chose the month of Nisan to be the month of redemption. The Egyptians worshipped the sheep, which represents the zodiac symbol Aries—the most prominent of the twelve signs. During Nisan, that constellation rises at sunset every evening. Pharaoh relied on its ascending power to protect him from Hashem. That is why he still had the confidence to throw Moshe and Aharon out of the palace even after six plagues. Later on, knowing that the month of Nisan was about to begin, his arrogance and confidence rose to unprecedented levels—so much so that he even threatened Moshe with death if he dared come back again. In response, Hashem told Moshe, " החודש הזה לכם " : This month will be for you—the head of all months. It will be ours, because it will be proven that the so-called powers of astrology are false and that Hashem is the sole power in the universe, above and below, and that we are His treasured nation. Rav Yerucham Levovitz explains that this is why we use the name Pesach to describe the holiday. Even though Hashem performed numerous miracles, the essence of the holiday is commemorating the moment the world recognized Hashem as the only One with power. That moment took place during Makkat Bechorot , which occurred at the midpoint of the month of Nisan—when the constellation Aries was at its peak influence. At that moment, Hashem demonstrated His power and His love for Klal Yisrael when He struck down the Egyptian firstborns and passed over the homes of the Jews. Whenever we pray to Hashem, we should imagine His complete power—not just over the lower world, but over the upper dimensions as well. Even a decree that is sealed in Shamayim can be broken. In the month of Nisan, Hashem showed the world that He is the only power. From then on, Nisan became the month of miracles. May we see the ultimate salvation with the coming of Mashiach, speedily in our days. Amen. * taken from Yalkut Yosef Pesach edition English