Genesis 36:26

And these are the kings that reigned in the land of Edom,.... In the land that was afterwards called the land of Edom; for this laud was not so called when these kings began to reign: for, according to Bishop Cumberland (f), and those that follow him (g), these were Horite kings, who, after their defeat by Chedorlaomer, Gen 14:5; in order to secure themselves the better from such a calamity for the future, set up a kingdom, and which appears, by the following account, to be elective; and so Maimonides (h) observes, that not one of these kings were of Edom: and these were:

before there reigned any king over the children of Israel; and there being no kings over Israel until many years after the times of Moses, hence some have thought these words are inserted by some other writer after him; but there is no need to suppose that; for Moses knew, from foregoing prophecies and promises, that kings would arise out of them and reign over them, Gen 17:6; and this he was so certain of, that he himself, by divine direction, gave laws and rules to the children of Israel respecting their future kings, Deu 17:14; besides Moses himself was king in Jeshurun or Israel, Deu 33:5, so that it is the same as if he had said, these are the kings that reigned in Edom, before this time.