Edom

And he sent messengers before him to Esau, his brother, to the land of Seir, to the country of Edom.

And Jacob boiled pottage: to whom Esau, coming faint out of the field, said: Give me of this red pottage, for I am exceeding faint. For which reason his name was called Edom.

And Esau dwelt in mount Seir: he is Edom.

Then were the princes of Edom troubled, trembling seized on the stout men of Moab: all the inhabitants of Canaan became stiff.

In Medieval Hebrew the Christian world was referred to as Edom.