Because you harbored an ancient hatred and delivered the Israelites over to the sword in the time of their disaster at the final stage of their punishment,
Mount Seir was mentioned as partner with Moab in one of the threatenings we had before (Eze 25:8); but here it is convicted and condemned by itself, and has woes of its own. The prophet must boldly set his face against Edom, and prophesy particularly against it; for the God of Israel has said, O Mount Seir! I am against thee.
Commenting on Ezekiel 35:1-9
Because thou hast had a perpetual hatred,.... There was an old grudge and enmity subsisting in the posterity of Esau against the posterity of Jacob, because the latter supplanted the former, and got the birthright and blessing from him; and which was discovered in all ages, and at all opportunities, and on all occasions which offered; and such has been the hatred of the church...
perpetual hatred-- (Psa 137:7; Amo 1:11; Oba 1:10-16). Edom perpetuated the hereditary hatred derived from Esau against Jacob. shed the blood of, &c.--The literal translation is better. "Thou hast poured out the children of Israel"; namely, like water. So Psa 22:14; Psa 63:10, Margin; Jer 18:21. Compare Sa2 14:14.