Numbers 22:22-26

But God was angry that he was going, and the angel of the Lord took his stand in the road as an adversary against him. Now he was riding on his donkey, and his two servants were with him.

When the donkey saw the angel of the Lord standing in the road with his sword drawn in his hand, the donkey turned off from the road and went into the field; and Balaam struck the donkey to guide her back onto the road.

Then the angel of the Lord stood in a narrow path of the vineyards, with a stone wall on this side and on that side.

When the donkey saw the angel of the Lord, she pressed herself against the wall and pressed Balaam’s foot against the wall, so he struck her again.

Then the angel of the Lord went farther, and stood in a narrow place where there was no way to turn to the right or to the left.