And the donkey saw the angel of the LORD standing in the way, and his sword drawn in his hand: and the donkey turned aside out of the way, and went into the field: and Balaam struck the donkey, to turn her into the way.
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George Leo Haydock
Ass. The angel appeared thrice to the ass, before he was perceived by Balaam, chap. xxix. 3, 4. The second time, St. Augustine (q. 50,) thinks he was standing in the vineyard. (Calmet)