I would like to add and backup what oldhermit has stated, it's sound Biblical theology. At Genesis 22:1 it states, "Now it came about after these things, that GOD tested Abraham," This is referring to the Lord God asking Abraham to sacrifice his son, his only son.
At verse 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 nothing to him, for now I know that you fear God, since you have not withheld your son, your only son, from Me." At verses 13 and 14 the Lord provides a ram for Abraham to sacrifice.
Vs15, "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 bless you and 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 their enemies." Vs18, "And in your seed all the nations of the earth shall be blessed because you have OBEYED MY VOICE."
As I stated before, you have the angel of the Lord at Genesis 16 multiplying Hagar's descendants. You have a Genesis 17:1-2 the Lord God Almighty multiplying Abram's descendants. And of course you have here at Genesis 22 the Lord God again saying or affirming that He will multiply Abraham's descendants.
As I said in my original thread, "Did Abram see God?" Yes, he saw God in the person of the angel of the Lord who is the preincarnate Jesus Christ. Let me clear up some misconceptions. Jesus Christ is not an angel, like Michael or Gabriel. The angel of the Lord "NEVER" appears in the New Testament, period. He is mentioned by Stephen at Acts 7.
Here is what the writer of Hebrews 6:13,14 states, "For when God made the promise to Abraham, since He could not swear by no one greater, HE SWORE BY HIMSELF, vs14, saying, I will surely bless you, and i will surely multiply you." This is also mentioned in part at Luke 1:73, "The oath which He swore to Abraham our father."
Now, some here might think (and this has been brought up numerous times) that the angel of the Lord is a "shaliach" which means someone "is a Jewish legal emissary or agent. The Jews have a concept where an agent can represent (in this case God) as a the principle in business dealings.
There is one big problem with this, an agent cannot swear an oath on behalf of the principle. This also means angels cannot swear an oath on behalf of God because swearing an oath is a matter of one's conscience. I got this from the "Jewish Virtual Library" on line. "According to Bet Shammai and Bet Hillel a person appointed to carry out a specific mandate is disqualified from acting as a witness in a case."
In other words, if you witnessed a crime you cannot send someone else like your Aunt Mildred to testify for you or swear for you that you did indeed witness the crime. In fact, even if you were in no condition to go to court, the court would send someone to "depose" you. In closing, I would be more than happy to address any and all objections you may have.