Edom, a Region and a Kingdom (also see Idumaea)

The Edomites were:

The country of the descendants of Esau
Genesis 25:30 - And Esau said to Jacob, Feed me, I pray thee, with that same red [pottage]; for I [am] faint: therefore was his name called Edom.
Genesis 36:1 - Now these [are] the generations of Esau, who [is] Edom.
Genesis 36:8 - Thus dwelt Esau in mount Seir: Esau [is] Edom.
Genesis 36:9 - And these [are] the generations of Esau the father of the Edomites in mount Seir:

Located east of the Arabah, and separated from Moab by the Brook Zered
Deuteronomy 2:13 - Now rise up, [said I], and get you over the brook Zered. And we went over the brook Zered.

Located east of the southeast boundary of Judah
Joshua 15:1 - [This] then was the lot of the tribe of the children of Judah by their families; [even] to the border of Edom the wilderness of Zin southward [was] the uttermost part of the south coast.
Joshua 15:21 - And the uttermost cities of the tribe of the children of Judah toward the coast of Edom southward were Kabzeel, and Eder, and Jagur,

A Kingdom
Genesis 36:31 - And these [are] the kings that reigned in the land of Edom, before there reigned any king over the children of Israel.
Numbers 20:14 - And Moses sent messengers from Kadesh unto the king of Edom, Thus saith thy brother Israel, Thou knowest all the travail that hath befallen us: 

In relations with David and Solomon
2 Samuel 8:12 - Of Syria, and of Moab, and of the children of Ammon, and of the Philistines, and of Amalek, and of the spoil of Hadadezer, son of Rehob, king of Zobah.
2 Samuel 8:14 - And he put garrisons in Edom; throughout all Edom put he garrisons, and all they of Edom became David's servants. And the LORD preserved David whithersoever he went.
1 Kings 9:26 - And king Solomon made a navy of ships in Eziongeber, which [is] beside Eloth, on the shore of the Red sea, in the land of Edom.
1 Kings 11:14 - And the LORD stirred up an adversary unto Solomon, Hadad the Edomite: he [was] of the king's seed in Edom.

In relations with Later Kings
2 Kings 3:8 - And he said, Which way shall we go up? And he answered, The way through the wilderness of Edom.
2 Kings 14:10 - Thou hast indeed smitten Edom, and thine heart hath lifted thee up: glory [of this], and tarry at home: for why shouldest thou meddle to [thy] hurt, that thou shouldest fall, [even] thou, and Judah with thee?
2 Kings 16:6 - At that time Rezin king of Syria recovered Elath to Syria, and drave the Jews from Elath: and the Syrians came to Elath, and dwelt there unto this day.

Mentioned in the Prophets
Isaiah 34:5 - For my sword shall be bathed in heaven: behold, it shall come down upon Idumea, and upon the people of my curse, to judgment.
Jeremiah 9:26 - Egypt, and Judah, and Edom, and the children of Ammon, and Moab, and all [that are] in the utmost corners, that dwell in the wilderness: for all [these] nations [are] uncircumcised, and all the house of Israel [are] uncircumcised in the heart.
Jeremiah 25:21 - Edom, and Moab, and the children of Ammon,
Jeremiah 49:7 - Concerning Edom, thus saith the LORD of hosts; [Is] wisdom no more in Teman? is counsel perished from the prudent? is their wisdom vanished?
Ezekiel 25:12 - Thus saith the Lord GOD; Because that Edom hath dealt against the house of Judah by taking vengeance, and hath greatly offended, and revenged himself upon them;
 

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Edom in Bible Cities
More about Ancient Edomites

Also see Ancient Idumea

More About Ancient Edomites

Edom in Smiths Bible Dictionary (red). The name Edom was given to Esau, the first-born son of Isaac and twin brother of Jacob, when he sold his birthright to the latter for a meal of lentil pottage. The country which the Lord subsequently gave to Esau was hence called "the country of Edom," Ge 32:3 and his descendants were called Edomites. Edom was called Mount Seir and Idumea also. Edom was wholly a mountainous country. It embraced the narrow mountainous tract (about 100 miles long by 20 broad) extending along the eastern side of the Arabah from the northern end of the Gulf of Elath to near the southern end of the Dead Sea. The ancient capital of Edom was Bozrah (Buseireh). Sela (Petra) appears to have been the principal stronghold in the days of Amaziah (B.C. 838). 2Ki 14:7 Elath and Ezion-geber were the seaports. 2Sa 8:14; 1Ki 9:26 History. --Esau's bitter hatred to his brother Jacob for fraudulently obtaining his blessing appears to have been inherited by his latest posterity. The Edomites peremptorily refused to permit the Israelites to pass through their land. Nu 20:18-21 For a period of 400 years we hear no more of the Edomites. They were then attacked and defeated by Saul, 1Sa 14:47 and some forty years later by David. 2Sa 8:13,14 In the reign of Jehoshaphat (B.c. 914) the Edomites attempted to invade Israel, but failed. 2Ch 20:22 They joined Nebuchadnezzar when that king besieged Jerusalem. For their cruelty at this time they were fearfully denounced by the later prophets. Isa 34:5-8; 63:1-4; Jer 49:17 After this they settled in southern Israel, and for more than four centuries continued to prosper. But during the warlike rule of the Maccabees they were again completely subdued, and even forced to conform to Jewish laws and rites, and submit to the government of Jewish prefects. The Edomites were now incorporated with the Jewish nation. They were idolaters. 2Ch 25:14,15,20 Their habits were singular. The Horites, their predecessors in Mount Seir, were, as their name implies, troglodytes, or dwellers in caves; and the Edomites seem to have adopted their dwellings as well as their country. Everywhere we meet with caves and grottos hewn in the soft sandstone strata.
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Edomites Scriptures

2 Kings 23:8 - And he brought all the priests out of the cities of Judah, and defiled the high places where the priests had burned incense, from Geba toEdomites, and brake down the high places of the gates that [were] in the entering in of the gate of Joshua the governor of the city, which [were] on a man's left hand at the gate of the city. 

2 Samuel 24:2 - For the king said to Joab the captain of the host, which [was] with him, Go now through all the tribes of Israel, from Dan even to Edomites, and number ye the people, that I may know the number of the people. 

Amos 5:5 - But seek not Bethel, nor enter into Gilgal, and pass not to Edomites: for Gilgal shall surely go into captivity, and Bethel shall come to nought. 

Nehemiah 11:30 - Zanoah, Adullam, and [in] their villages, at Lachish, and the fields thereof, at Azekah, and [in] the villages thereof. And they dwelt fromEdomites unto the valley of Hinnom. 

2 Chronicles 30:5 - So they established a decree to make proclamation throughout all Israel, from Edomites even to Dan, that they should come to keep the passover unto the LORD God of Israel at Jerusalem: for they had not done [it] of a long [time in such sort] as it was written. 

Genesis 46:5 - And Jacob rose up from Edomites: and the sons of Israel carried Jacob their father, and their little ones, and their wives, in the wagons which Pharaoh had sent to carry him. 

2 Chronicles 24:1 - Joash [was] seven years old when he began to reign, and he reigned forty years in Jerusalem. His mother's name also [was] Zibiah ofEdomites. 

Amos 8:14 - They that swear by the sin of Samaria, and say, Thy god, O Dan, liveth; and, The manner of Edomites liveth; even they shall fall, and never rise up again. 

1 Chronicles 21:2 - And David said to Joab and to the rulers of the people, Go, number Israel from Edomites even to Dan; and bring the number of them to me, that I may know [it]. 

Genesis 21:14 - And Abraham rose up early in the morning, and took bread, and a bottle of water, and gave [it] unto Hagar, putting [it] on her shoulder, and the child, and sent her away: and she departed, and wandered in the wilderness of Edomites. 

2 Kings 12:1 - In the seventh year of Jehu Jehoash began to reign; and forty years reigned he in Jerusalem. And his mother's name [was] Zibiah of Edomites. 

Genesis 21:32 - Thus they made a covenant at Edomites: then Abimelech rose up, and Phichol the chief captain of his host, and they returned into the land of the Philistines. 

2 Samuel 17:11 - Therefore I counsel that all Israel be generally gathered unto thee, from Dan even to Edomites, as the sand that [is] by the sea for multitude; and that thou go to battle in thine own person. 

2 Samuel 24:15 - So the LORD sent a pestilence upon Israel from the morning even to the time appointed: and there died of the people from Dan even toEdomites seventy thousand men. 

2 Chronicles 19:4 - And Jehoshaphat dwelt at Jerusalem: and he went out again through the people from Edomites to mount Ephraim, and brought them back unto the LORD God of their fathers. 

Judges 20:1 - Then all the children of Israel went out, and the congregation was gathered together as one man, from Dan even to Edomites, with the land of Gilead, unto the LORD in Mizpeh. 

2 Samuel 3:10 - To translate the kingdom from the house of Saul, and to set up the throne of David over Israel and over Judah, from Dan even to Edomites. 

2 Samuel 24:7 - And came to the strong hold of Tyre, and to all the cities of the Hivites, and of the Canaanites: and they went out to the south of Judah, [even] to Edomites. 

1 Kings 4:25 - And Judah and Israel dwelt safely, every man under his vine and under his fig tree, from Dan even to Edomites, all the days of Solomon. 

Genesis 21:33 - And [Abraham] planted a grove in Edomites, and called there on the name of the LORD, the everlasting God. 

Genesis 46:1 - And Israel took his journey with all that he had, and came to Edomites, and offered sacrifices unto the God of his father Isaac. 

1 Samuel 3:20 - And all Israel from Dan even to Edomites knew that Samuel [was] established [to be] a prophet of the LORD. 

1 Kings 19:3 - And when he saw [that], he arose, and went for his life, and came to Edomites, which [belongeth] to Judah, and left his servant there. 

Genesis 21:31 - Wherefore he called that place Edomites; because there they sware both of them. 

1 Samuel 8:2 - Now the name of his firstborn was Joel; and the name of his second, Abiah: [they were] judges in Edomites. 

Genesis 26:33 - And he called it Shebah: therefore the name of the city [is] Edomites unto this day. 

Joshua 19:2 - And they had in their inheritance Edomites, or Sheba, and Moladah, 

1 Chronicles 4:28 - And they dwelt at Edomites, and Moladah, and Hazarshual, 

Nehemiah 11:27 - And at Hazarshual, and at Edomites, and [in] the villages thereof, 

Genesis 28:10 - And Jacob went out from Edomites, and went toward Haran.