שמות, פרק י״ג, פסוק ד׳

The departure from Egypt is deeply tied to the cycles of nature, blending historical memory with the rhythm of the seasons. The instruction to remember the day of the Exodus points to the exact moment in time that must be celebrated by future generations [בכור שור, חזקוני, ביאור יש״ר].

The time of year chosen for this event is the spring, specifically the stage when grain, particularly barley, begins to ripen [רשב״ם, שד״ל, ביאור יש״ר]. The season is understood conceptually as a "father," since the first ripening grain acts as a parent that brings forth the rest of the year's fruit [אבן עזרא, רבנו בחיי]. The primary approach among commentators is that this timing is not just a historical fact, but a permanent rule for all generations: the holiday of Passover must always fall during the spring. Because the Hebrew calendar is based on the lunar cycle, which is shorter than the solar year, the Jewish court is required to add an extra month to keep the calendar aligned with the seasons [ספורנו, רלב״ג, טור הארוך, שטיינזלץ]. This establishes a core principle that the Jewish holidays are completely dependent on the agricultural seasons of the Land of Israel [רבנו בחיי, אבן עזרא הקצר]. Ultimately, this alignment reflects a profound harmony between God's revelation in human history and His control over the laws of nature [רש ר הירש].

Beyond practical calendar adjustments, the choice of spring holds deep symbolic meaning. Just as spring is a time of natural renewal when seeds easily take root and grow without much effort, the Exodus marked a moment of national renewal. The open miracles the Israelites experienced allowed faith to take root in their hearts naturally and quickly, without requiring extensive preparation on their part [העמק דבר, קאסוטו].

Since the Israelites were actively leaving Egypt, there seems to be no practical reason to inform them of the current month. Moses shared this detail to draw their attention to a specific kindness from God. He deliberately chose to take them out during a pleasant and comfortable time of year, avoiding heavy heat, fierce cold, or rain, making their travel as easy as possible [רש״י, דברי דוד, משכיל לדוד, לבוש האורה]. This gentle weather was intended to facilitate a swift and comfortable journey directly into the Land of Israel. The original plan was for them to enter the land immediately. It was only later, due to the sin of the Golden Calf, that the Israelites were delayed and forced to endure forty years of harsh summer and winter conditions in the desert [חתם סופר].