Idumea is the Greek name for the region of Edom, south of Judea, derived from the Hebrew אֱדֹם (Edom). After the Babylonian exile, Edomites moved into southern Judea, and the region became known as Idumea. By the New Testament period, it was a distinct territory, sometimes under Jewish control (the Herodian family had Idumean roots). Mark 3:8 mentions people coming from Idumea to hear Jesus. The LXX typically transliterates the Hebrew as Ἐδώμ, but Hellenistic sources preferred Ἰδουμαία. Translations either transliterate ("Idumea") or use the biblical name "Edom," recognizing the geographical continuity.