A small thread that may be of interest to some. In short, there are 3 occasions in the OT where Yahweh is identified with the epithet "Angel". (mal ak)
Genesis 48:15 And he blessed Joseph and said, “The God before whom my fathers Abraham and Isaac walked, the Yahweh who has been my shepherd all my life long to this day, 16 the Angel who has redeemed me from all evil.......
Malachi 3:1Behold, I send Malachi, and he shall prepare the way before me: and the Lord, whom ye seek, will suddenly come to His temple; and the Angel of the covenant, whom ye desire, behold, He cometh, saith Yahweh of armies.
Ecclesiastes 5:2 Do not be quick to speak, and do not be hasty in your heart to utter a word before God. After all, God is in heaven and you are on earth. So let your words be few.
(and the parallel in vs.6)
Let not your mouth lead you into sin, and do not say before the Angel that it was a mistake. Why should God be angry at your voice and destroy the work of your hands?
All of these texts have inspired many textual variations and countless interpretations that obscure this use of the epithet Angel (messenger) with Yahweh, however the best explanation is that in the mind of these writers, the word was not offensive or dishonoring. Might this reflect a theology prior to the full adoption of the Greek daemon concept, (lesser deities called angels)? Or maybe its use was not relegated to that limited use yet.
Malachi is of course the same word (messenger/angel) The author of the book by that title is anonymous.