And when the donkey saw the angel of the LORD, she thrust herself unto the wall, and crushed Balaam's foot against the wall: and he struck her again.
All Commentaries on Numbers 22:25 Go To Numbers 22
Gregory The Dialogist
AD 604
The spirit which is carried out of itself to pride is made to remember the condition to which it is subject, owing to the ills of the flesh which it bears. This was rightly indicated though Balaam (if only he had been willing to follow obediently the voice of God!) in that his journey was retarded. For we see Balaam on the way to attain his purpose, but the beast under him thwarts his intention. The ass, stopped by a command, perceives an angel not seen by the mind of the man. For commonly the flesh, retarded by affliction, manifests to the mind the God whom the mind itself did not see, though it dominates the flesh, owing to the scourgings it receives.