The same feeling against polygamy existed in later Talmudic times. Of all the rabbis named in the Talmud there is not one who is mentioned as having lived in polygamy. The general sentiment against polygamy is illustrated in a story related of the son of R. Judah ha-Nasi (Ket. 62a). A peculiar passage in the Targum (Aramaic paraphrase) to Ruth iv. 6 points to the same state of popular feeling. The kinsman of Elimelech, being requested by Boaz to marry Ruth, said, “I can not redeem; for I have a wife and have no right to take another in addition to her, lest she be a disturbance in my house and destroy my peace. Redeem thou; for thou hast no wife.” This is corroborated by R. Isaac, who says that the wife of Boaz died on the day when Ruth entered Palestine (B. B. 91a). Polygamy, was, however, sanctioned by Jewish law and gave rise to many rabbinical discussions. While one rabbi says that a man may take as many wives as he can support (Raba, in Yeb. 65a), it was recommended that no one should marry more than four women (
ib. 44a). R. Ami was of the opinion that a woman had a right to claim a bill of divorce if her husband took another wife (
ib. 65a). The institution of the
Ketubah, which was introduced by the Rabbis, still further discouraged polygamy; and subsequent enactments of the Geonim (see Müller’s “Mafteaḥ,” p. 282, Berlin, 1891) tended to restrict this usage.
An express prohibition against polygamy was pronounced by R. Gershom b. Judah, “the Light of the Exile” (960-1028), which was soon accepted in all the communities of northern France and of Germany. The Jews of Spain and of Italy as well as those of the Orient continued to practise polygamy for a long period after that time, although the influence of the prohibition was felt even in those countries. Some authorities suggested that R. Gershom’s decree was to be enforced for a time only, namely, up to 5000 A.M. (1240 C.E.; Joseph Colon, Responsa, No. 101; see Shulḥan 'Aruk, Eben ha-‘Ezer, i. 10, Isserles’ gloss), probably believing that the Messiah would appear before that time; but this opinion was overruled by that of the majority of medieval Jewish rabbis. Even in the Orient monogamy soon became the rule and polygamy the exception; for only the wealthy could afford the luxury of many wives. In Africa, where Mohammedan influence was strongest, the custom was to include in the marriage contract the following paragraph: “The said bridegroom . . . hereby promises that he will not take a second wife during the lifetime of the said bride . . . except with her consent; and, if he transgresses this oath and takes a second wife during the lifetime of the said bride and without her consent, he shall give her every tittle of what is written in the marriage settlement, together with all the voluntary additions herein detailed, paying all to her up to the last farthing, and he shall free her by regular divorce instantly and with fitting solemnity.” This condition was rigidly enforced by the rabbinic authorities (see Abrahams, “Jewish Life in the Middle Ages,” p. 120).