עַ֣ם גָּד֥וֹל וְרַ֛ב וָרָ֖ם כָּעֲנָקִ֑ים וַיַּשְׁמִידֵ֤ם יְהוָה֙ מִפְּנֵיהֶ֔ם וַיִּירָשֻׁ֖ם וַיֵּשְׁב֥וּ תַחְתָּֽם׃
אַ פֿאָלק גרױס און פֿיל, און הױך װי די עַנָקים; אָבער גאָט האָט זײ פֿאַרטיליקט פֿון פֿאַר זײ, און זײ האָבן זײ פֿאַרטריבן, און זיך באַזעצט אױף זײער אָרט;
Ramban
AND ESAU TOOK HIS WIVES, AND HIS SONS, AND HIS DAUGHTERS. This journey took place after his brother had returned from Haran and established himself in the land of Canaan, as it says here, and he went into a land away from his brother Jacob. It is possible that this was also after the death of their father. Now when his brother Jacob was still in Haran, Esau was already in Se’ir, as is written above!24732:4. But the explanation of the matter is that Esau went to Se’ir in the days of the chieftains of the Horites, the inhabitants of the land,248Verse 20 here. and he became a lord with a following of four hundred men249Above, 32:7. while his children and family remained in the land of Canaan. It is possible that Esau had some land there in another location, in the plain, not on mount Se’ir. Therefore Scripture speaks of him as living in the land of Se’ir, the field of Edom.24732:4. And after his brother returned to the land of Canaan he vacated before his coming for he knew that the land of Canaan was the inheritance of his brother which his father had given him in his blessing. So he took his sons… and all the souls of his house — a multitude of people — and went to Se’ir to settle there. He then fought with the sons of Se’ir the Horite, the inhabitants of the land,248Verse 20 here. for perhaps they feared him, and they did not permit him to enter their territory into mount Se’ir, where the fortifications were. However, he settled in the field of Edom, in his original location, and the Eternal destroyed them from before them, and they succeeded them, and dwelt in their stead, as it said in Mishneh Torah.250Deuteronomy 2:21. It therefore says there, Because I have given mount Se’ir unto Esau for a possession.251Ibid., 2:5.
Ramban
FOR ONLY OG KING OF BASHAN REMAINED OF THE REMNANT OF THE REPHAIM; BEHOLD, HIS BEDSTEAD WAS A BEDSTEAD OF IRON etc. The purport of the verse is to tell that this Og was called the king of the Amorites because he ruled over them, but he himself was of the Rephaim. And in order to tell of his height and strength, since the Rephaim were a people great, and many, and tall as the Anakim,267Above, 2:10. it states that his bedstead was a bedstead of iron, no bedstead of wood being able to support him as it does other people. It is in the city of Rabbah which was his dwelling place, and when the children of Ammon destroyed the Rephaim as is mentioned above,268Ibid., Verse 21. and his city [Og’s capital, Ashtaroth] was captured, he alone was saved from the hands of the Ammonites. It is this which is stated, For only Og king of Bashan remained of the remnant of the Rephaim. His bed was left there in Rabbah which now belongs to the children of Ammon, and the Ammonites preserved it as testimony that they destroyed a great and tall people; and the mighty man whose height was like the height of the cedars, and he was strong as the oaks269Amos 2:9. — from him they captured his kingdom. This is the sense of the word behold [behold, his bedstead …], meaning: “behold, the proof of [Og’s strength] still exists; it is the iron bedstead, very long and wide, and is to be found in Rabbah of the children of Ammon,” since his bedstead, which was in Ashtaroth, was plundered and lost.270That is, when the Ammonites destroyed the Rephaim and captured Og’s capital city Ashtaroth (above, 1:4) they plundered it and took his bedstead from there and brought it to Rabbah.