'Angel of the Lord' in the Bible

But God was angry because he went. And the angel of the LORD stood in the way against him. And he rode upon his ass and two servants with him.

And when the ass saw the angel of the LORD stand in the way, and his sword drawn in his hand, she turned aside out of the way and went out into the field. And Balaam smote the ass, to turn her into the way.

And the angel of the LORD went and stood in a path between the vineyards, where was a wall on the one side and another on the other.

When the ass saw the angel of the LORD, she wrenched unto the wall and thrust Balaam's foot unto the wall, and he smote her again.

And the angel of the LORD went further and stood in a narrow place, where was no way to turn, either to the righthand or to the left.

And when the ass saw the angel of the LORD, she fell down under Balaam: and Balaam was wroth and smote the ass with a staff.

And the LORD opened the eyes of Balaam that he saw the angel of the LORD standing in the way, with his sword drawn in his hand. And he bowed himself and fell flat on his face.

And the angel of the LORD said unto him, "Wherefore smitest thou thine ass this three times? Behold, I came out to resist thee, for the way is contrary unto me,

And Balaam said unto the angel of the LORD, "I have sinned: for I wist not that thou stoodest in the way against me. Now therefore if it displease thine eyes, I will turn again."