The Angel of the Lord is Yahweh – Michael Heiser

Video from Cody Sorenson

"Throughout the OT, we frequently encounter the “angel of the Lord” (or, “angel of God”—as used interchangeably[1]). The term translated “angel” in both Hebrew (malak) and Greek (aggelos) simply means “messenger.” Although, we find many occurrences and classes/ranks of “angels” in both the OT and NT (some by name/description such as Michael, Gabriel, Satan, sons of God, cherubim, seraphim, etc.), the angel of the Lord in the OT was not a mere “created” angel (as asserted by the JWs). Rather,

He was identified as, and claimed to be, YHWH, “the God of Abraham, Isaac, and Jacob,” “God.” While all unitarian groups (esp. Muslims, JWs, and Oneness Pentecostals) oppose any implication of the deity and thus preexistence of the Son, Jesus Christ, the biblical evidence points to the preincarnate Christ as the identity of the angel of the Lord. Note below some of the more significant examples:

HAGER (fist defined occurrence): In Genesis 16, Hager encountered the angel of the Lord in the desert. In verse 10, the angel of the Lord said to her: “I will greatly multiply your descendants so that they will be too many to count.” In verse 11, the angel of the Lord refers to YHWH in third person: “Because the LORD has given heed to your affliction.” However, note Hager’s words to the angel of the Lord in verse 13: “‘You are a God who sees’; for she said, ‘I even remained alive here after seeing Him?’” First, she addresses the angel as “a God who sees.” And second, she acknowledges that she “remained alive here after seeing Him,” thus echoing Exodus 33:20, where YHWH says, “no man can see Me and live!.." from the article: The Preincarnate Christ is The Angel of the Lord