Examples of Mortals being called the Angel of Yahweh in the Old Testament

 

Haggai

 

Then spake Haggai the Lord's messenger (מַלְאַךְ יְהוָה) in the Lord's message unto the people saying, I am with you, saith the Lord. (Hag 1:13)

 

Levitical Priest

 

For the priest's lips should keep knowledge, and they should seek the law at his mouth: for he is the messenger of the Lord of hosts (כִּי מַלְאַךְ יְהוָה־צְבָאוֹת הוּא). (Mal 2:7)