when the Bible was read in public, and the reading happened to involve some of the Biblical rules against incest, then the reading must be stopped, if the reader interprets the regulations in a different way to the Talmudic opinions. Karaite views The Karaites, who reject the authority of Talmudic opinions, interpret the biblical prohibitions differently. The early Karaites adopted the principle that marriage was a true and full union – each spouse was to be considered legally as the same person, and hence someone related to one spouse was seen as having exactly the same relation to the other. Applied to the Biblical regulations, this produced drastically simple rules, prohibiting marriage between almost all relations and spousal relations, except that a man could still marry his niece (or step-niece) and his grandmother (or grandfather's wife, or spouse's grandmother, or spouse's grandfather's wife). However, it also prohibited marriage to the relatives of every subsequent husband of a divorced wife; if just a few women here and there engaged in serial monogamy (repeated marriage then divorce, to different people), there would be no-one left on the planet able to marry absolutely anyone else. In the 11th century, two Karaite reformists rejected the principle that a marriage was a true and full union, instead arguing that the only relationships that should be forbidden were those analogous to those in the biblical prohibitions. Dividing the principle relatives into two groups: First-degree relatives – parent, stepparent, sibling, sibling-in-law, child, and child-in-law Second-degree relatives – aunt (including uncle's wife), uncle (including aunt's husband), grandchild, grandchild's wife They organised the forbidden relationships into five or six categories: First-degree relatives, their direct ancestors, and their direct descendants Second-degree relatives, their direct ancestors, and their direct descendants First-degree relatives of the spouse (e.g. a man marrying two sisters, or a woman and her daughter), and their rivals (the wives of their husbands) Second-degree relatives of the spouse (e.g. a man marrying a woman and her granddaughter) The relative (by blood or marriage) of a relative's spouse, if such a marriage would create a parallel relation (e.g. a man marrying his brother's wife's sister, his grandfather's wife's granddaughter, or his uncle's niece); near-parallels are regarded as parallel relations (e.g. a man marrying his father's wife's sister, or his brother's wife's mother) for this purpose; stepsiblings are regarded as siblings for this purpose Second-degree relative's spouse's first-degree relatives (e.g. a