Edom was the elder brother of Israel. The two nations never forgot that they were of one blood and one parentage. Their languages were the same, as we may gather from the Edomite proper names; indeed, it would seem that the dialect of Edom agreed with Hebrew in those Arabising peculiarities which marked it off from the language of the Canaanites. Edomites took part in the Israelitish conquest of Palestine, and both Caleb and Othniel were Kenizzites by race.

The Edomite occupation of Seir was long subsequent to the settlement of the Ammonites and Moabites in the regions which bore their names, though it preceded the Israelitish settlement in Canaan. While Israel was herding its flocks in Egypt, Edom was establishing itself in the mountains of Seir. Esau, the brother of Jacob, had already gathered around him a body of followers, and had married into the family of a Horite chief. His descendants, partly by conquest, partly by absorption, planted themselves securely in the country which was henceforth to be called Edom. Horite and Amalekite Bedâwin were alike absorbed into the new-comers, whose position in Edom resembled that of the Israelites in Canaan.

How long the work of conquest and settlement lasted we do not know. It resulted in the formation of numerous tribes, each under its chieftain, the alûph or "duke" as he was termed. These "dukes" corresponded with the "princes" of the tribes of Israel. But whereas the "princes" of the Israelitish tribes did not survive the life in the desert, the "dukes" of Edom give way only to kings. For this there was a good reason. The invasion of Canaan and the promulgation of the Mosaic Law changed the whole organisation of the Hebrew people. On the one hand, the Israelites required a leader who should lead them in the first instance against the Canaanites, in the second against the foreign oppressors who enslaved them from time to time. On the other hand, the high-priests at Shiloh exercised many of the functions which would naturally have belonged to the head of the tribe. Neither "judge" nor high-priest was needed in Edom. There the native population was weak and uncivilised; it possessed neither cities nor chariots of iron, and its subjugation was no difficult task. Once in possession of the fastnesses of Seir, the Edomites were comparatively safe from external attack. It was a land of dangerous defiles and barren mountains, surrounded on all sides by the desert. There was no central sanctuary, no Levitical priesthood, no Mosaic Law. The "duke" consequently had no rival; the history of Edom knows nothing of judges or high-priests.

The law of evolution, however, which governed other Semitic communities prevailed also in Edom. The dukes had to give place to a king. The tribes were united under a single leader, and the loosely federated clans became a kingdom. As in Israel, so too in Edom the kingdom was elective. But, unlike Israel, it remained elective; there was no pressure of Philistine conquest, no commanding genius like David, no central capital like Jerusalem to make it centralised and hereditary. Several generations had to pass before the Edomites were called upon to fight for their independence against a foreign invader, and when they did so the struggle ended in their subjugation. The elective principle and the want of a common centre and feeling of unity that resulted from it had much to do with the victory of David.

The song of triumph with which the Israelitish fugitives celebrated the overthrow of their Egyptian enemies mentions the alûphím or "dukes" of Edom. But before the Israelites had emerged from the wilderness the dukes had been supplanted by a king. It was a king who refused a passage through his dominions to Moses and his followers, and in this king some scholars have seen the Aramæan seer Balaam the son of Beor. At all events, the first Edomite king is said to have been Bela or Balaam the son of Beor, and the name of the city of Din-habah, from which he came, has a close resemblance to that of Dunip in northern Syria.

A list of the kings of Edom is given in the thirty-sixth chapter of Genesis, extracted from the state annals of the country. It seems to be brought down to the time when Saul was elected king over Israel. The chronicles of Edom were probably taken to Jerusalem at the time of its conquest by David; at any rate, they would then have become accessible to an Israelitish writer. The conquest was very thorough, all the male population being put to the sword, and a few only escaping to Egypt. Among these was a member of the royal house, Hadad by name, who grew up at the Egyptian court, and, after marrying the sister-in-law of the Pharaoh, returned to his native mountains, where he played the part of a bandit chief. The caravans which passed from the Gulf of Aqaba to the north were attacked and plundered, and Solomon up to the end of his reign failed to suppress the brigands. With the disruption of the Israelitish monarchy, Edom, as was natural, fell to the lot of Judah, and for many years was governed by a viceroy. It was not until after the death of Jehoshaphat that the Edomites succeeded in revolting from their masters, and in recovering their ancient independence. Three of their rulers are mentioned in the Assyrian inscriptions, from which we learn that there was a city of Edom, as well as a country of that name.

Of the religion of the Edomites we know but little. The supreme Baal was the Sun-god Hadad; another god worshipped by them was Qaus or Kos. Of goddesses we hear nothing. The Israelites, however, recognised in the Edomites brethren of their own, whose religion was not far removed from that of the descendants of Jacob. An Edomite of the third generation could enter "into the congregation of the Lord," and we hear of no rival deity in Edom to Yahveh of Israel. Indeed, in the old poetry of Israel Yahveh was said to have risen up "from Seir," and the charge brought against Edom by the prophet Obadiah is not that of idolatry or the worship of a "strange god," but of standing on the side of the "foreigners" on the day that Jerusalem was destroyed.

The southern part of Edom was known as Teman; it was to the east of Teman that the Kadmonites or "children of the East" pitched their tents. We first hear of them in an Egyptian papyrus of the age of the Twelfth dynasty (B.C. 2500). Then they received with hospitality a political fugitive from Egypt; he married one of their princesses and became one of their chiefs. Their wisdom was celebrated in Palestine like that of their Edomite neighbours of Teman, and the highest praise that could be bestowed on Solomon was that his "wisdom excelled all the wisdom of the children of the East."

Not far from the camping-places of the Kadmonites was the land of Uz, famous as the home of Job. Uz, in fact, was a province of Edom; Edomite colonists, so we are told in the Book of Lamentations,[11] inhabited it. Indeed, it has been suggested that the difficulties presented by the language of the Book of Job are due to the fact that it is the language of Edom rather than of the Jews, differing from the latter only as an English dialect may differ from that of a neighbouring county. At all events, Job was as much a hero of Hebrew as of Edomite tradition, while the last chapter of the Book of Proverbs contains the wise sayings of a king whose territory adjoined the land of Edom. Lemuel, according to the Hebrew text, which is mistranslated in the Authorised Version, ruled over Massa, and Massa, the Mash of Genesis, is described in the Assyrian inscriptions as that part of northern Arabia which spread eastward from Edom. The Hebrew of Palestine doubtless included it in the country of "the children of the East."

The larger part of northern Arabia, however, was the home of the Ishmaelites. They lived, it is said, "from Havilah unto Shur," like the Amalekites or Bedâwin. But whereas the Amalekites were the wild, untamable natives of the desert, the Ishmaelites came of a cultured ancestry, half Babylonian, half Egyptian, and the traditions of it were never forgotten. They lived a settled life in fenced villages and fortified castles, as their descendants still do to-day. Like the Israelites, they were divided into twelve tribes, the eldest and most important of which were the Nabatheans, who spread from the frontiers of Babylonia to Petra in the far west. Kedar was another powerful tribe; in the days of the later Assyrian empire its kings contended in battle with the armies of Nineveh.