Numbers 22:27-31

27And the ass saw the Angel of Jehovah, and lay down under Balaam; and Balaam's anger was kindled, and he smote the ass with his staff.

28And Jehovah opened the mouth of the ass, and she said to Balaam, What have I done to thee, that thou hast smitten me these three times?

29And Balaam said to the ass, Because thou hast mocked me: I would there were a sword in my hand, for now would I kill thee!

30And the ass said to Balaam, Am not I thine ass, upon which thou hast ridden ever since I was thine to this day? was I ever wont to do so to thee? And he said, No.

31Then Jehovah opened the eyes of Balaam, and he saw the Angel of Jehovah standing in the way, and his sword drawn in his hand; and he bowed and prostrated himself on his face.