Numbers 22:23

22:23 And the donkey saw the angel of the Lord standing in the road with his sword drawn in his hand, so the donkey turned aside from the road and went into the field. But Balaam beat the donkey, to make her turn back to the road.

Numbers 22:31

22:31 Then the Lord opened Balaam’s eyes, and he saw the angel of the Lord standing in the way with his sword drawn in his hand; so he bowed his head and threw himself down with his face to the ground.