And these (which follow) are the kings that reigned in the land of Edom, before there reigned any (literally, before the reigning of a) king over (or, to) the children of Israel.
1. The reference to Israelitish kings in this place has been explained as an evidence of post-Mosaic authorship (Le Clerc, Bleek, Ewald, Bohlen, et alii), or at least as a later interpolation from 1 Chronicles 1:43 (Kennicott, A. Clarke, Lange), but is sufficiently accounted for by remembering that in Genesis 35:11 kings had been promised to Jacob, while the blessing pronounced on Esau (Genesis 27:40) implied that in his line also should arise governors, the historian being understood to say that though the promised kings had not yet arisen in the line of Jacob, the house of Esau had attained at a somewhat early period to political importance (Calvin, Michaelis, Rosenmüller, Keil, Kalisch, Gerlach, Havernick, and others).
2. The difficulty of finding room for the dukes (seven, four and three, all grandsons of Esau, Genesis 35:15-19), the kings (eight in number, verses 32-39), and again the dukes (in all eleven, verses 40-43), that intervened between Esau and Moses disappears if the kings and dukes existed contemporaneously, of which Exodus 15:15, as compared with Numbers 20:14, affords probable evidence.
3. As to the character of the Edomitish kings, it is apparent that it was not a hereditary monarchy, since in no case does the son succeed the father, but an elective sovereignty, the kings being chosen by the dukes, alluphim, or phylarchs (Keil, Hengstenberg, Kalisch, Gerlach), though the idea of successive usurpations (Lange) is not without a measure of probability.