In the synagogue the Torah is read aloud in a fixed annual cycle of fifty-four weekly portions (parashiyot), one each Shabbat morning, with certain adjacent portions doubled in ordinary years so the sequence fits the calendar. Each portion is named for a distinctive word near its opening and is paired with a haftarah, a reading from the Prophets. The cycle closes and restarts on Simchat Torah. Naso ('Take a Census', Numbers 4:21-7:89), the longest single parashah, includes the ordeal of the suspected wife (sotah), the law of the nazirite, the identical offerings of the twelve tribal leaders, and the threefold priestly blessing (6:24-26), still recited over congregations and children.
The ordeal of the sotah, the suspected wife made to drink water mixed with dust from the Tabernacle floor and a scroll's dissolved curse (Numbers 5:11-31), is treated in the Mishnah's own tractate devoted to it as already effectively obsolete by the late Second Temple period, the rabbis recording that the ritual was discontinued once the general moral state of the people no longer sustained the conditions the rite required, one of the clearest instances in rabbinic literature of a biblical ritual being read as suspended by its own internal logic. The law of the nazirite, who vows to abstain from wine, cutting hair and contact with the dead for a fixed period (Numbers 6:1-21), is read by classical commentators with notable ambivalence, some treating voluntary asceticism as praiseworthy, others, drawing on the requirement that the nazirite bring a sin offering upon completing the vow, reading the sin offering itself as evidence that abstaining from permitted pleasures needs its own atonement.