Jezekiel 35:15

15 Thou shalt be desert, O mount Seir, and all Idumea; and it shall be utterly consumed: and thou shalt know that I am the Lord their God.

Jezekiel 35:15 In-Context

13 and thou hast spoken swelling words against me with thy mouth: I have heard .
14 Thus saith the Lord; When all the earth is rejoicing, I will make thee desert.
15 Thou shalt be desert, O mount Seir, and all Idumea; and it shall be utterly consumed: and thou shalt know that I am the Lord their God.

The Brenton translation of the Septuagint is in the public domain.