שמות, פרק י״ב, פסוק כ״ד

The transition from a dramatic, one-time historical rescue to an eternal tradition is a defining moment in shaping the identity of the Israelites. The directive to observe the Passover acts as a bridge, ensuring that the memory of redemption is actively passed down from father to son throughout the generations.

Because the instruction immediately follows the dramatic smearing of blood on the doorposts, there is a natural assumption that this specific protective act must be repeated every year. However, the primary approach among commentators is that the eternal requirement does not include the blood or the temporary measures of the original night, such as eating with girded loins and wearing shoes. Instead, the mandate focuses on the core observance of the Passover sacrifice and the celebration of the holiday itself [רמב״ן, אבן עזרא, הטור הארוך, ביאור יש״ר, ביאור שטיינזלץ, קאסוטו]. Others suggest the eternal command specifically highlights the elements of the holiday that can be kept even without a Temple, such as eating matzah, resting from labor, and remembering the original sacrifice [אלשיך]. On a more conceptual level, the directive is seen as an ongoing engagement with God's promise to save the Israelites, serving as a powerful symbol of the relationship between God and His people [רש ר הירש]. It is also understood as a call to internalize the profound themes of distinction and divine protection that characterize the entire Exodus narrative [העמק דבר].

The command shifts subtly from addressing the community as a whole to focusing on the individual and his children. This change reflects a historical division: the initial, comprehensive instructions, including the blood on the doors, applied fully to the generation leaving Egypt, while only specific elements carry over to their descendants [אור החיים]. Alternatively, this shift represents a dual expectation. The observance must be maintained both by the nation as a unified collective and by each individual within the privacy of their own home [רש ר הירש]. Another perspective suggests that the initial communal address is directed at the elders of Israel. They are tasked with deeply understanding the essence of the commandment so they can impart it to their communities, ultimately embedding it as a personal and family tradition for every individual [העמק דבר].

The specific focus on children establishes vital practical guidelines for future generations. The emphasis on sons leads some to conclude that women are exempt from the obligation of bringing the Passover sacrifice [צפנת פענח]. It also serves to teach that circumcision is an absolute prerequisite, prohibiting an uncircumcised male from partaking in the sacrifice [הדר זקנים]. Furthermore, the eternal nature of the statute dictates that the Passover offering must always be selected exclusively from sheep and goats, precluding the use of cattle [תורה תמימה].

Ultimately, the overarching purpose of this eternal law is to take an action born out of an urgent, existential need for survival and elevate it into a permanent memorial [בכור שור]. The unique customs of the night, which stand in stark contrast to all other festivals, are deliberately designed to spark the curiosity of the children and encourage them to ask questions [אבן עזרא]. To achieve this, the observance demands pure intention directed toward heaven. The Passover sacrifice cannot be reduced to a routine ritual or an act of coarse indulgence; it requires profound spiritual awareness. Fulfilling the Passover sacrifice with the proper mindset is considered equivalent to accepting the responsibility of all the commandments combined [שפתי כהן].