Topic summary
Idumea

Extracted from the Wikipedia article Edom.
Hellenistic period
During the Hellenistic period, both Jews and Idumeans spoke Aramaic and used it for literary and legal documents. An Idumean marriage contract from Maresha, dating from 176 BCE, closely resembles the ketubbot used by Jews. However, despite these cultural similarities, some Jews maintained a distinct boundary between themselves and the Idumeans. This is evident in Ben Sira 50:25–26, which expresses disdain for three "nations," including "the inhabitants of Se'ir", referring to the Edomites/Idumeans.