a "mix of people" which has identical spelling in unvowelled text. Jeremiah 25:24 parallels "kings of ʿarav" with "kings of the ʿerev that dwell in the wilderness". The account in 1 Kings 10:15 matching 2 Chronicles 9:14 is traditionally vowellized to read "kings of the ʿerev ". The people in question are understood to be the early Nabateans who do indeed appear to have been a mix of different tribes. The medieval writer Ibn an-Nadim, in Kitab al-Fihrist, derived the word "Arab" from a Syriac pun by Abraham on the same root: in his account, Abraham addresses Ishmael and calls him uʿrub, from Syriac ʿrob, "mingle". The early Nabateans are also referred to as ʿarvim in Nehemiah 4:7 and the singular ʿarvi is applied to Geshem a leader who opposed Nehemiah. This term is identical to ʿaravi in unvowelled text but traditionally vowelized differently. It is usually translated "Arabian" or "Arab" and was used in early 20th century Hebrew to mean Arab. However it is unclear if the term related more to ʿarav or to ʿerev. On the one hand its vowelization resembles that of the term ʿarvati (Arbathite) which is understood as an adjective formed from ʿaravah; thus it is plausibly a similarly formed adjective from ʿarav and thus a variant of ʿaravi. On the other hand, it is used in 2 Chronicles 21:16 for a seemingly different people located in Africa plausibly the same Africans referred to as an ʿerev (mix of people) in Ezekiel 30:5. Any of the other meanings of the root are also possible as the origin of the name. The words ʿaravim (plural of ʿaravi ) and ʿarvim appear the same in unvowelled texts as the word ʿorvim meaning ravens. The occurrences of the word in 1 Kings 17:4-6 are traditionally vowellized to read ʿorvim. In the Talmud (Chullin 5a) a debate is recorded as to whether the passage refers to birds or to a people so named, noting a Midianite chieftain named Oreb (ʿorev: raven) and the place of his death, the Rock of Oreb. Jerome understood the term as the name of a people of a town which he described as being in the confines of the Arabians. (Genesis Rabba mentions a town named Orbo near Beth Shean.) One meaning of the root ʿ-r-b in Hebrew is "exchange/trade" (laʿarov: "to exchange", maʿarav: "merchandise") whence ʿorvim can also be understood to mean "exchangers"