Numbers 22:20-23

²⁰And God cometh in unto Balaam, by night, and saith to him, 'If to call for thee the men have come, rise, go with them, and only the thing which I speak unto thee — it thou dost do.'

²¹And Balaam riseth in the morning, and saddleth his ass, and goeth with the princes of Moab,

²²and the anger of God burneth because he is going, and a messenger of Jehovah stationeth himself in the way for an adversary to him, and he is riding on his ass, and two of his servants are with him,

²³and the ass seeth the messenger of Jehovah standing in the way, and his drawn sword in his hand, and the ass turneth aside out of the way, and goeth into a field, and Balaam smiteth the ass to turn it aside into the way.