Rosh Chodesh — The Monthly Renewal
Hebrew: ראש חודש | When: 1st (sometimes also 30th) of each Hebrew month
The Significance
Rosh Chodesh is the first moed (appointed time) mentioned explicitly in the Torah: “This month shall be for you the first of the months” (Shemos 12:2) — the month of Nissan, and the command was given to the entire people as the foundational act of Jewish time-keeping. The Jewish calendar is lunar-solar, but the koach (power) of Jewish time is in the moon.
The Kiddush HaChodesh — the sanctification of the new month — was historically performed by the Sanhedrin based on testimony of witnesses who had seen the new moon. This act of human sanctification determined the calendar for the entire Jewish world: “Not what is above in heaven, but what Israel below declares.” This is one of the most dramatic expressions of bechira (free choice) and human dignity in all of halacha.
The Moon as Symbol: Renewal After Diminishment
The Midrash records that the moon complained at Creation: “Two kings cannot share one crown.” G-d responded by diminishing the moon. Yet the moon was promised: it will be renewed, it will shine again in full. The sun does not wax and wane — it is static. The moon’s monthly journey from invisibility to fullness and back to invisibility is the Jewish metaphor for galut and geulah, for exile and redemption.
The Jewish people are likened to the moon: “Renew our days as of old” — just as the moon is renewed, so too Israel. This is why Rosh Chodesh is traditionally associated especially with women, who have particular insight into renewal-through-diminishment.
Kiddush Levanah
The monthly recitation of Kiddush Levanah — the sanctification of the moon, said outdoors when the moon is visible between the 3rd and 14th of the month — is one of the most vivid expressions of this theme. The congregation gathers outside, looks up at the growing moon, and declares: “Just as I cannot touch you, so shall my enemies not be able to touch me… David, King of Israel, lives and endures!” The renewal of the moon is the renewal of Jewish eternity.
Rosh Chodesh in Chassidus
Each month has its own koach (spiritual force), its own letter of the Hebrew alphabet (through which it was created), its own mazal (constellation), and its own unique avodah for those sensitive to the spiritual seasons. The Rebbe would often open a new period of sichos or ma’amarim at Rosh Chodesh, treating each new month as a distinct spiritual chapter.
Rosh Chodesh is a Yom Tov (semi-holiday): Musaf is added, Tachanun is omitted, Hallel is recited (in a shortened form), and there is an additional korban Musaf mentioned in the Torah. In many communities, women observe extra festivity on Rosh Chodesh as a reward for their refusal to contribute their jewelry to the Golden Calf.