שמות, פרק י״ב, פסוק מ״א

The moment of liberation from Egypt marks a precise, pre-planned turning point where a collection of slaves transforms into an organized camp led by God. The Exodus occurred not merely because the Israelites cried out in suffering, but because the exact time pre-decreed by Divine providence had finally arrived [אבן עזרא, קאסוטו]. The primary approach among commentators is that the four hundred and thirty years mentioned regarding their time in Egypt do not reflect the actual physical duration of their stay. Rather, the countdown began much earlier, starting from the Covenant Between the Parts and the birth of Isaac, meaning the Israelites actually resided in Egypt for only two hundred and ten years [רשב״ם, רש״י, ריב״א].

Regarding the additional thirty years beyond the originally promised four hundred, some attribute this extension to the sins of the people in Egypt. Another perspective suggests the delay occurred because the Israelites desired to become permanent residents in Egypt rather than temporary strangers. This stubbornness postponed their redemption until they finally agreed to leave [כלי יקר]. Conversely, others note that because the Egyptians forced the Israelites to labor both day and night, the nights were counted as additional days. This intense oppression actually allowed the overall duration of their enslavement to be shortened [מלבי״ם, פרדס יוסף]. The historical record of this period carries an underlying note of sorrow, hinting at the pain of the delayed redemption and reflecting the reality that the plagues and troubles in Egypt did not cease until the exact moment of departure [אור החיים].

When the pre-determined end finally came, the timing was absolute; God did not delay the Israelites for even the blink of an eye [רש״י, מזרחי, ברכת אשר]. The specific date of their departure, the fifteenth of Nissan, holds deep historical significance, as it was the very same day Abraham and Sarah were informed of Isaac's upcoming birth, the day Isaac was born, and the day the Covenant Between the Parts was formed [רש״י]. The departure was executed with exact precision, taking place at midday in broad daylight. God brought the Israelites out in full view of everyone, acting as a bold challenge to any Egyptian who might dare to protest [תורה תמימה]. This clear timeline ensures there is no confusion that the Exodus spanned across two days; everything culminated within a single calendar day [ביאור יש״ר]. On that exact same day, the Israelites were also given the commandments to sanctify their firstborn and to forever remember the Exodus [הדר זקנים].

As they departed, the people underwent a fundamental change in character. They did not leave as a random, chaotic crowd, but as a deeply organized camp. Rather than functioning like a standard military force driven by coercion, they emerged as a unified group of individuals joining together out of their own free will for a shared purpose [הכתב והקבלה, אם למקרא]. They were structured by their tribes, each maintaining its unique identity while uniting entirely around God's leadership [רלב״ג, קאסוטו, רש״ר הירש, ביאור שטיינזלץ]. However, a completely different approach suggests that the description of God's hosts leaving Egypt does not refer to the Israelites at all. Instead, it refers to the ministering angels who had accompanied and overseen the nation during their time in Egypt. These angels now departed alongside the people, bringing about the suspension of the natural order [העמק דבר, מלבי״ם].