At Judges 2:1 it clearly states the angel of the Lord stated, "I brought you up out of Egypt and led you into the land which I have "SWORN" to your fathers; and I said I will never break My covenant with you."
This takes place at Exodus 20:2 says, "I am the Lord your God, who brought you out of the land of Egypt, out of the house of slavery."
This is also spoken of at Exodus 6:1-8. I will just touch on the main points. At vs2, "God spoke further to Moses and said to him, "I am the Lord; vs3, and I appeared to Abraham, Isaac and Jacob as God Almighty, but My name, Lord, I did not make Myself known to them."
At Genesis 17:1 the Lord God appeared (physically) to Abraham. "Now when Abram was ninety-nine years old, the Lord appeared to Abram and said to him, "I am God Almighty; Walk before Me, and be blameless, vs2, And I will establish My covenant between Me and you, And I will multiply you exceedingly."
Going back to Genesis 16:7 is when the angel of the Lord first appears as the angel of the Lord. "Now the angel of the Lord found her by a spring of water in the wilderness, by the spring on the way to Shur."
At vs10, the angel of the Lord said to her, "I will greatly multiply your descendants so that they shall be too many to count." At vs 13 Hagar says, "The she called the name of the Lord who appeared to her, "Thou art a God who sees," for she said, Have I even remained alive here after seeing Him?"
If the angel of the Lord is just that, an actual I am not aware of angels called to multiple descendants anywhere in the Bible. I maintain that the angel of the Lord who multiplied Hagar's descendants is the same being who multiplied Abrahams descendants.
Also notice at Judges 2:1 it was specifically the angel of the Lord who swore to the fathers and would never break My covenant, speaking in the first person. At Genesis 22 notice something amazing.
Genesis 22 deals with Abraham sacrificing his first born son Isaac to the Lord God. Genesis 22:10, "And Abraham stretched out his hand, and took the knife to slay his son. Vs11, But the angel of the Lord called to him from heaven, and said, "Abraham, Abraham!" And he said, "Here I am,"
Vs12, And he said, "Do not stretch out your hand against the lad, and do nothin to him; for now I know that you fear God, since you have not withheld your son, your only son, from Me." (Notice the angel of the Lord is speaking in the third person). God often speaks in the third person. A good example is at Job 1:8, "And the Lord said to Satan. "Have you considered My servant Job? For there is no one like him on the earth a blameless and upright man, fearing God and turning away from evil."
Back to Genesis 22 verse 15, "Then the angel of the Lord called to Abraham a second time from heaven. vs16, And said, "By Myself I have sworn, declares the Lord, because you have done this thing, and have not withheld your son, your only son, Vs17, 'Indeed, I will greatly multiply your seed as the stars of the heavens, and as the sand which is on the seashore; and your seed shall possess the gate of your enemies." Vs18, "And in your seed all the nations of the earth shall be blessed, because you have obeyed MY VOICE." Who's voice, who was doing the speaking out of heaven?
And, if the angel of the Lord is just that, an actual angel why does God allow him to call out of heaven two times when the Lord God Himself has called out from heaven on various occasions?
Now, here is why I know the angle of the Lord is not an actual angel but the pre-incarnate Jesus Christ. Hebrews 6:13-14, "For when God made the promise to Abraham, since He could not swear by no one greater, HEW SWORE BY HIMSELF, vs14, "saying, I will bless you, and I will surely multiply you."
Again, the angel of the Lord cannot be an actual angel, angels cannot swear oaths on behalf of God Himself. I'm not saying this, the Bible is.
God the Father has no separate manifestation from the Son. the Son is the ONLY manifestation and revelation of the Father. What is known of the Father is REVEALED through the Son.