Obadiah 1:3

The pride of thine heart hath deceived thee, the Hebrew text making this very emphatic: "Betrayed hath thee the pride of thine heart," upon which Idumea depended, thou that dwellest in the clefts of the rock, in the mountain fastnesses of its rugged country, whose habitation is high, for the territory of Edom was a rocky mountain mass, full of caverns, that saith in his heart, Who shall bring me down to the ground? The Edomites considered themselves so secure in their rock dwellings, which, in their opinion, were practically inaccessible, that they were filled with overweening pride. The Lord now shows the vanity of this confidence.