 One form of this once widespread language is used in Daniel and Ezra, but the use of the name "Chaldee" to describe it, first introduced by Jerome, is linguistically correct and accurate in the sense that the Chaldeans were using this language.In the Hebrew Bible, the prophet Abraham is stated to have originally come from "Ur of the Chaldees" (Ur Kaśdim).The region that the Chaldeans eventually made their homeland was in relatively poor southeastern Mesopotamia, at the head of the Persian Gulf.