Numbers 22:25-29

²⁵And the ass saw the angel of the Lord, and went near the wall, crushing Balaam's foot against the wall; and he gave her more blows.

²⁶Then the angel of the Lord went further, stopping in a narrow place where there was no room for turning to the right or to the left.

²⁷And the ass saw the angel of the Lord and went down on the earth under Balaam; and full of wrath, Balaam gave her hard blows with his stick.

²⁸Then the Lord gave the ass the power of talking, and opening her mouth she said to Balaam, What have I done to you that you have given me blows these three times?

²⁹And Balaam said to the ass, You have made me seem foolish: if only I had a sword in my hand I would put you to death.