Lift not up your horn on high: speak not with a stiff neck. Speak not with a stiff neck - Mr. Bruce has observed that the Abyssinian kings have a horn on their diadem; and that the keeping it erect, or in a projecting form, makes them appear as if they had a stiff neck; and refers to this passage for the antiquity of the usage, and the appearance also.
Related Commentaries of Psalms 75:5
Psalms 75:5
5 Lift not up your horn on high: speak not with a stiff neck.