Moments before the transition from slavery to freedom, the foundations of the Israelite nation are established. Nation-building does not begin with military or political organization, but rather within the family unit, centered around an act that combines open defiance of Egyptian beliefs with absolute devotion to God. The divine instruction is directed to both Moses and Aaron. The primary approach among commentators wonders why the command is given to both, as Moses is typically the sole speaker. The accepted explanation is that Moses and Aaron showed immense mutual respect, each asking the other to teach, resulting in the instruction emerging from both of them as a single, unified voice. Another perspective suggests that the communication carried a dual tone: a firm expression representing the severity of the King's decree, balanced by a softer approach that highlights the great privilege of fulfilling the Commandment [אור החיים].
Although this instruction was given on the first of the month of Nissan, the practical action was delayed until the tenth day [רש״י, שד״ל]. The requirement to secure the animal specifically on the tenth of the month was a unique directive solely for the Passover in Egypt, and did not apply to future generations [רש״י, תורה תמימה, מלבי״ם, אברבנאל]. Taking the animal four days before its public slaughter on the fourteenth allowed for a careful inspection to ensure it was free of any blemishes [רבנו בחיי, רלב״ג]. Furthermore, the tenth day of that month fell on a Sabbath. Securing the animal on this day in full view of the Egyptians, without them being able to retaliate against the Israelites, was a profound miracle. Consequently, this specific Sabbath became known as the Great Sabbath [דעת זקנים, חזקוני, חתם סופר]. Additionally, the tenth day of the month held special significance in ancient time division, much like the Day of Atonement in the month of Tishrei [קאסוטו].
The logistics of this act establish a fundamental legal principle regarding agency: a person's appointed agent acts with their full authority. This means a single individual can acquire and prepare the offering on behalf of an entire group, provided the agent is a mature adult with understanding, as a minor lacks the legal capacity to act for others [תורה תמימה, הירש, מלבי״ם]. The specific choice of a young sheep or goat [רלב״ג, שטיינזלץ] was highly intentional. Commentators agree that the zodiac sign of Aries—the ram—was worshipped as an Egyptian deity, and the month of Nissan marks the time when this astrological sign reaches its peak power. Taking the animal, binding it, and publicly slaughtering it was designed to uproot idolatry from the hearts of the Israelites. It proved that their redemption came directly from a divine decree rather than from astrological forces [רמב״ן, אברבנאל, צרור המור, חזקוני]. Because the Israelites were deeply entrenched in the impurity of Egypt and lacked spiritual merit, this act of self-sacrifice and complete detachment from Egyptian idols provided them with the necessary merit to be redeemed [אברבנאל, חב״ד].
As redemption approaches, the emerging Israelite society is organized into distinct social circles. The structure differentiates between the extended family or tribe and the nuclear family living under a single roof [רשב״ם, אבן עזרא, הירש, מלבי״ם]. The practical guidance is to gather around the offering based on actual circumstances: if an extended family is too large, each nuclear household prepares its own; if a nuclear family is too small, they join and share with their extended relatives [אבן עזרא, בכור שור]. Beyond these practical logistics lies a profound spiritual principle. The merit generated by this act protects not only the individual within their home but the entire extended family. In this way, the merit of the righteous members can shield those who might be less worthy [העמק דבר]. Ultimately, the building of the nation begins by recognizing individual rights, but it immediately binds those individuals together in mutual responsibility around a shared destiny and the fulfillment of God's Commandment [הירש].