The Bible says that the throne in heaven is the throne of God, and the Lamb, God in the glorified body of the man Christ Jesus.
For God has to have a visible relationship with the saints, and it is by the man Christ Jesus, which Jesus said to Philip if you have seen me, you have seen the Father.
And many people do not understand what Jesus being on the right hand of God means, but He is not sitting on a throne next to the Father, for the Bible says there is one throne in heaven, and one who sits on that throne.
So before Jesus was born, and no person could raise to heaven for Jesus said no man has went to heaven yet, then God probably had a visible relationship to the angels by being in a visible image of an angel.
So when the Bible says the angel of the LORD it would seem like it would be a visible image of God, and sometimes an angel.
Isa 52:5 Now therefore, what have I here, saith the LORD, that my people is taken away for nought? they that rule over them make them to howl, saith the LORD; and my name continually every day is blasphemed.
Isa 52:6 Therefore my people shall know my name: therefore they shall know in that day that I am he that doth speak: behold, it is I.
Pro 30:4 Who hath ascended up into heaven, or descended? who hath gathered the wind in his fists? who hath bound the waters in a garment? who hath established all the ends of the earth? what is his name, and what is his son's name, if thou canst tell?
Exo 6:1 Then the LORD said unto Moses, Now shalt thou see what I will do to Pharaoh: for with a strong hand shall he let them go, and with a strong hand shall he drive them out of his land.
Exo 6:2 And God spake unto Moses, and said unto him, I am the LORD:
Exo 6:3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.
The name Jehovah could not be known until God was ready to deliver the Jews from Egypt.
And the name Jesus could not be known until God was ready to send the Son to be the Savior, which is told in the New Testament when it was told to Mary for He shall save His people from their sins.
Gen 16:7 And the angel of the LORD found her by a fountain of water in the wilderness, by the fountain in the way to Shur.
Gen 16:10 And the angel of the LORD said unto her, I will multiply thy seed exceedingly, that it shall not be numbered for multitude.
Gen 16:11 And the angel of the LORD said unto her, Behold, thou art with child, and shalt bear a son, and shalt call his name Ishmael; because the LORD hath heard thy affliction.
Gen 16:13 And she called the name of the LORD that spake unto her, Thou God seest me: for she said, Have I also here looked after him that seeth me?
Jdg 13:3 And the angel of the LORD appeared unto the woman, and said unto her, Behold now, thou art barren, and bearest not: but thou shalt conceive, and bear a son.
Jdg 13:6 Then the woman came and told her husband, saying, A man of God came unto me, and his countenance was like the countenance of an angel of God, very terrible: but I asked him not whence he was, neither told he me his name.
Jdg 13:17 And Manoah said unto the angel of the LORD, What is thy name, that when thy sayings come to pass we may do thee honour?
Jdg 13:18 And the angel of the LORD said unto him, Why askest thou thus after my name, seeing it is secret?
Jdg 13:21 But the angel of the LORD did no more appear to Manoah and to his wife. Then Manoah knew that he was an angel of the LORD.
Jdg 13:22 And Manoah said unto his wife, We shall surely die, because we have seen God.
Jdg 13:23 But his wife said unto him, If the LORD were pleased to kill us, he would not have received a burnt offering and a meat offering at our hands, neither would he have shewed us all these things, nor would as at this time have told us such things as these.
It appears as if God appeared as an angel to people in the Old Testament, for it would seem like His relationship to the angels would be a visible image of an angel, and when Jesus was born it is now a visible image of God in a glorified body to the angels and saints, for Jesus was made so much better than the angels, and the beginning of creation, and Jesus shall judge the angels and people.