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. Yitro ('Jethro', Exodus 18:1-20:23) is named for Moses' father-in-law, who counsels the delegation of judges. Its heart is the theophany at Mount Sinai and the proclamation of the Ten Commandments amid thunder and smoke, the covenant at the centre of Israel's law.
Yitro is unusual for naming an outsider at the head of the portion that contains Sinai's revelation, and rabbinic literature has long asked why: some commentators read it as underscoring that wisdom about just government can come from beyond the covenant community, others that Jethro's own conversion, moving from priest of Midian to worshipper of the God of Israel after hearing what had happened to Pharaoh, is offered as a model for how nations outside Israel might respond to what they witness. Jethro's advice to appoint judges over thousands, hundreds, fifties and tens is treated in later Jewish legal tradition as the origin of a graded court system, and its placement immediately before the Sinai narrative is read as making a point about order: revelation itself needs a functioning judiciary to be lived out, not just heard. The portion also contains, in the varied rabbinic count of whether Israel heard two commandments or all ten directly from God, one of the classical tradition's most contested readings of the Sinai scene, tied to a difference over whether verses in the first person indicate direct divine speech.