ויקרא, פרק כ״ג, פסוק ב׳

The establishment of the Biblical calendar introduces an unprecedented partnership between heaven and earth. Rather than imposing a rigid, preordained schedule of sacred days, God entrusts the keys of holy time to human beings, making the sanctity of the festivals entirely dependent on the actions and declarations of an earthly court.

This directive is delivered to the entire nation of the Israelites rather than exclusively to Aaron and the priests. The primary approach among commentators is that this section does not focus on the detailed festival sacrifices, which fall under the priests' domain and are outlined later before the nation enters the Land. Instead, the focus here is on the immediate establishment of the holy days themselves [רמב״ן, הטור הארוך, פרדס יוסף]. Furthermore, speaking to the entire nation highlights that the calendar and the declaration of leap years are determined with the public's needs in mind. For instance, the court might adjust the year specifically to ensure that distant exiles have enough time to travel to Jerusalem for a pilgrimage [רש״י, מזרחי, תורה תמימה, ברכת אשר].

The authority granted to the earthly court to proclaim these dates is absolute. An underlying tradition regarding the proclamation of these dates reveals that the responsibility rests entirely on the human leaders themselves. This conveys the immense power vested in the court: their calendar decisions are fully valid even if they miscalculate, act in error, or intentionally declare the wrong day. The moment the earthly court proclaims a day as holy, God and the heavenly court align with them, establishing the divine reality based entirely on human decree [מנחת שי, תולדות יצחק, מלבי״ם, שפתי כהן, רש״ר הירש].

The nature of these sacred occasions is understood on several levels. The primary approach among commentators is that these are days of public gathering, where the nation is called to step away from mundane routines, assemble in houses of prayer, and dedicate their time to Torah study and spiritual growth [ספורנו, רמב״ן, הכתב והקבלה]. Another perspective focuses on the verbal declaration of the day, suggesting an obligation to actively vocalize the sanctity of the new month and the festival, much like sanctifying a holy day over a cup of wine [רשב״ם, תורה תמימה]. A third layer emphasizes personal preparation. It requires individuals to ready their bodies and souls by altering their daily habits through festive food, drink, and clean clothing, thereby honoring the occasion and setting it apart from ordinary weekdays [רמב״ן, הכתב והקבלה, רד״צ הופמן].

The establishment of these appointed times is immediately followed by a reminder of the Sabbath. This proximity serves a dual purpose. On one hand, it highlights a fundamental contrast: while the festivals depend entirely on human declaration, the Sabbath has been permanently fixed by God since the six days of creation and requires no human intervention to make it holy [רמב״ן, אור החיים, רלב״ג, תולדות יצחק]. On the other hand, the comparison elevates the festivals, teaching that their sanctity is equal to that of the Sabbath. Consequently, anyone who disrespects or desecrates a festival is viewed as having desecrated the Sabbath itself [מלבי״ם, פענח רזא, שפתי כהן].

Ultimately, God's claim over these days comes with a profound condition. They are considered His appointed times only when they are genuinely dedicated to holiness, learning, and spiritual joy. If a person exploits the festival strictly for physical indulgence, focusing solely on food and drink without any spiritual substance, the day is stripped of its divine sanctity. It ceases to be God's festival and becomes merely a human holiday—a self-serving celebration that, as the prophets warn, God rejects [ספורנו, כלי יקר, שפתי כהן].