Erusin and Nissuin

Seen from the outside, a Jewish wedding under the chuppah looks like one continuous ceremony. In reality, from a legal and religious standpoint, it is two clearly distinct stages, governed by different laws, sealed by different blessings, and — historically — separated in time by several months, sometimes a full year. These two stages have precise names: erusin (or kiddushin), the ritual betrothal, and nissuin, the marriage itself.

Understanding this two-part structure is the key to understanding everything else in the ceremony: why there are two cups of wine, why two separate sets of blessings are recited, and why the reading of the ketubah is so closely tied to these two stages (its exact place varies with your community’s custom).

1Erusin: far more than an engagement

The word "betrothal" only partly captures erusin, also called kiddushin (from the Hebrew root ק-ד-ש, "to sanctify" or "to set apart"). It is not a simple promise to marry, reversible and without legal consequence, the way an engagement can be in other cultures. Erusin is an act that genuinely changes a woman's status: once erusin is completed, she is bound to her husband-to-be by a tie that can only be dissolved by a get (a religious writ of divorce) — even though the marriage itself (the nissuin) has not yet taken place.

In practice, under the chuppah, erusin is accomplished through two acts: the blessing over wine and the betrothal blessing ("al ha-erusin"), recited over a first cup shared by the couple; then the act of kiddushin itself, when the groom places the ring on the bride's finger while reciting the set formula before two valid witnesses. It is this precise moment — the giving of the ring, not an exchange of vows — that constitutes, under Jewish law, the founding act of the bond.

2Nissuin: the union made effective

Nissuin is the second stage, the one that turns the woman "set apart" into a wife fully united with her husband, permitted to live with him. It is sealed by the seven blessings — the famous sheva brachot — recited over a second cup of wine. These seven blessings are not only about the couple: they speak of the creation of the world, the joy of Zion and Jerusalem, and the joy of friends — placing the union of two individuals within a far wider, almost cosmic, perspective of collective joy and the continuity of the Jewish people.

It is also after the nissuin, in practice right after the chuppah, that the yichud takes place in Ashkenazi practice: a few minutes alone together for the couple, marking, in concrete terms, the passage into shared life. The established Sephardic minhag does not observe it at that moment (see “Yichud”).

3Why two cups of wine, not one

This structure explains a detail many guests notice without quite understanding it: why the couple drinks wine twice, a few minutes apart, under the chuppah. These are not two instances of the same moment repeated for solemnity's sake: they are, literally, two different ceremonies, each sealed by its own cup and its own set of blessings — the first for the erusin, the second for the nissuin.

1. First cup — the blessing over wine and the betrothal blessing, then the giving of the ring: the kiddushin is accomplished.
2. Reading of the ketubah, aloud, before the assembly: in many customs, the hinge between the two stages (confirm with your community’s practice).
3. Second cup — the seven blessings (sheva brachot): the nissuin is accomplished, the couple is fully united.

4The ketubah, a hinge between two worlds

It is precisely because erusin and nissuin are two distinct acts that reading the ketubah at this point in the ceremony, as many customs place it, makes full sense. Historically, up to a full year could pass between the betrothal and the marriage — time for the bride's family to prepare her dowry and trousseau, and for the husband-to-be to prepare a home. During that period, the couple was already bound (a divorce would have been needed to break the engagement) but did not yet live together.

The ketubah, by listing the husband's material obligations to his wife, naturally reads as the bridge between the two stages: it records his commitment to the woman he has just "acquired" through the kiddushin, right before the nissuin makes that union effective. Reading it at this moment, in the customs that place it here, reminds the assembly that the couple is moving from a legal commitment (the erusin) to a shared life built on concrete responsibilities (the nissuin) — not the other way around.

5Today: joined, but still distinct

In virtually every contemporary Jewish wedding, whatever the community — Sephardic, Ashkenazi, or Mizrahi, Orthodox, Conservative, or Reform — erusin and nissuin are celebrated on the same day, a few minutes apart under the same chuppah. But the legal distinction between the two remains fully in force: they are still two separate acts, each with its own blessings, and it is this separation that gives the whole ceremony its rhythm and depth. Understanding this two-part structure lets one read the wedding not as a series of isolated symbols, but as a coherent story, where each stage logically sets up the next.