Hebrews 1.1       God spoke through prophets to the fathers...    

In the past God spoke to our ancestors through the prophets, doing so at many different times in different ways,,

God, having spoken to the children of Israel at different times in different ways in the past about the son of Abraham, now speaks to the children of Israel by that son of Abraham whom he promised to him and to Sarah — who is now come to them.  

Beloved, by this you can know the Spirit of God and the spirit of error. Any spirit that professes to know Yehoshua and confesses that Yehoshua HaMashiach is come in the flesh is of God. And any spirit that professes to know Yehoshua and does not confess this is not of God. 

From the beginning of the Book of Hebrews to the end, in everything that is said we are speaking ultimatley about God,  the God of the Jews. And we are speaking about the one who reveals him as the God of the Jews. We are speaking about the God who spoke and the one son by whom he spoke. No false god has ever spoken. Although idolators have claimed to hear them, in truth, they have been completely mute.  

The true God has, in truth spoken. He has spoken by prophets and he has spoken by a son, the one whom he promised by the prophets. And it is Israel, the Jewish people, to whom he has spoken. It is in this way that he has spoken to the whole world.   

Hebrews 1.2       a son, whom he has  appointed heir 

Has in these last days spoken unto us by a son, whom he has appointed heir of all things, by whom also he made the worlds;

Again:

...has now in these climatic days spoken to us by a son whom he has made the heir of the world, for through him he has created all worlds.  

Before God spoke by means of a promise.  Now he speaks by means of the one promised.

The common practice of reading a Trinitarian understanding back into this passage, so as to have it say in effect that now the First Person of the Trinity has spoken to us by the Second Person of the Trinity, is a practice that does not respect the material as being a dissertation given conversationally within a completely Jewish community.  It is not that Jewish believers could not have had Trinitarian views, but such views would be their end point, not their starting point. 

It might be thought in our day and age by some people that the Jewish faith is basically theological monotheism, and that Abraham was simply the first monotheist. The elemental Jewish faith never started with, and could not start with theology. It was not enough for Abraham to know God naturally and to turn away from idolatry theologically. Had that been the case, Abraham could have been left where he was to do what he was doing. When God called Abraham, he did not call him simply to support his natural monotheism. When God called Abraham, he called him to come to know him in a new supernatural way, one which would involve the redemption of the world and the resurrection of the dead.

Universally, the Jewish faith started with Abraham and not only Abraham himself but, with the calling of Abraham, with the covenant promise, which was made also with Isaac and Jacob, and then with the Passover, the exodus from Egypt and the giving and receiving of the Torah. The Jewish faith began with the forming of the nation of God’s covenant people and their coming to the land promised to them where they would become a light to the nations. In the Jewish faith, God had never spoken to them about anything else than these things. There was always the hope in the universal Jewish faith that God would speak to them in a new and final way by an anointed son of Israel. And this Hope was built upon the knowledge that when God did finally speak to them by one Jewish son, he would be a new Moses, who would lead the twelve tribes of Israel out of captivity among all the nations of the earth and into the time of the final fulfillment of the promise of the covenant that God mare with the fathers. 

This is the spirit in which Hebrews 1:1-2 will be read when starting with the Jewish hope and faith at the incarnation of Yehoshua and ending, then, with the Jewish hope and faith with the atonement that he made for his people, as the High Priest of the order of the firstborn of Israel, resulting in the resurrection of the dead.  

The God  of the Jews, "The God who spoke", has the power and authority to appoint an heir to His creation. That He has appointed another heir of the world after Adam sinned and came under the sentence of death is a great revelation. When God spoke to Abraham it was about this. It was about a son and the inheritance of the world.

Hebrews 1.3       sat down on the right hand of the Majesty on high  

Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;

He radiates the glory of God.  He reveals the perfect and complete image of God. By the power of his word he sustains the very existence of creation. And once he had by himself made an atonement for our sins, he sat down at the right hand of the majestic throne above,  

The anthropormorphic expression referring to the, "right hand" of God is an appropriate expression to use here, not in reference to Adam's humanity or our humanity as the children of Adam but in relation to the humanity of the Messiah of the Jews. The term, "right hand" itself as applied to God is symbolic of the primary action taken by God in judging the world. That action was accomplished by the Jewish Messiah.

Hebrews 1.4      he has by inheritance obtained a more excellent name

Being made so much better than the angels, as he has by inheritance obtained a more excellent name than they.

He came to this position which is so much better than that of the angels because he received a much greater designation than theirs through his appointed inheritance.   

The statement that God has spoken to us by a son is a statement saying that, while we know that previously God sent us messages by means of angels, God has now sent His final messenger, who is the very son whom he promised from the beginning to Abraham. In this way, the first part of God's message to us now is the messenger, the son of Adam as the son of Abraham and the son of David.  This is his inheritance and this is the reason that he has received a more excellent name than any angel of God.  And the second part of the message, therefore, is what this son, the Messenger and Message of God, himself says and does.

Hebrews 1.5      this day have I begotten you

For unto which of the angels said he at any time, You are my Son, this day have I begotten you? And again, I will be to him a Father, and he shall be to me a Son?

Did he ever speak about making any angel his heir? Saying to any angel, “Did he ever speak to any angel saying, “You are my son. Today I have given birth to you”?  Or did he ever say about any angel, “I will be a father to him, and to me he will be a son”?   ^

Hebrews 1.6       he brings in the firstbegotten into the world

And again, when he bringeth in the firstbegotten into the world, he saith, And let all the angels of God worship him.

when he brings in the firstbegotten into the world,  = not on account of his eternal divinity but on account of his incarnation, beginning with his conception then birth then atoning death then resurrection from the dead...

For, it is when he introduces the firstborn heir to the world that he says, “Worship him all you gods!”   ^

Hebrews 1.7      Who makes his angels spirits

And of the angels he says, Who makes his angels spirits, and his ministers a flame of fire.

He describes his angels as his ministering servants, flaming spirits of fire.  His angelic messengers are spirits but his son as his messenger is become a physical being.

Angels are carriers of communications to and from... between God and his children. What is God’s message?  It is the son of Abraham.   ^

Hebrews 1.8      unto the son he says, your throne

But unto the son he says, your throne, O God, is for ever and ever: a sceptre of righteousness is the sceptre of your kingdom.

In contrast, he says to the son, “Yours is the throne of God, forever. The sceptre of your kingdom is a sceptre of righteousness.  ^

Hebrews 1.9     God, has anointed you

You have loved righteousness, and hated iniquity; therefore God, even your God, has anointed you with the oil of gladness above your fellows.

In explaining that a son is a more effective and more important messenger than a servant, the writer quotes the Scripture which declares why it is that God anointed his son and not an angel. This Scripture states that it is because his son, among all his companions, loved righteousness and hated non-observance of the Torah more than anyone else. This might remind us of Moses. 

Another way of reading this might be to say that anyone who loves righteousness and hates non-observance of the Torah will be anointed with the oil of gladness, accordingly, and that one who loves Torah observance the most will be anointed with the oil of gladness the most. This is spelled out in the promise of the new cutting of the covenant with the house of Israel and the house of Judah. As it says, I will write my Torah mitzvot in your heart.  ^

Hebrews 1.10     the foundation of the earth

And, You, Lord, in the beginning have laid the foundation of the earth; and the heavens are the works of your hands:

A lamb slain from the foundation of the earth.

"And You, Adonai"... John 1.1-2 + see note on 1.12   ^

Hebrews 1.11    They shall perish; but you remain

They shall perish; but you remain; and they all shall wax old as does a garment;

The Tanakh has spoken of nothing else from the beginning to the end but the world to come being built on the foundation of the redemption of this world.  ^

Hebrews 1.12     you shall fold them up

And as a vesture shall you fold them up, and they shall be changed: but you are the same, and you years shall not fail.

Colossians

All is built not only by the word of God but on the word of God made a Jew.  ^

Hebrews 1.13     your footstool

But to which of the angels said he at any time, Sit on my right hand, until I make thine enemies your footstool?

Nothing is done by God in reaction. The Good News is accomplished at the very point of the Divine Design when Israel was ready for all the world to be drawn unto him to surround Jerusalem.

This applies therefore to the 70 angels of the 70 nations as well as the angels of Israel and the gospel.   ^

Hebrews 1.14    heirs of salvation

Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?

Moshiah is sitting at the right hand of God now in the new heaven where there is no time commanding all angels, both those that serve the nations and those that serve Israel, so as to bring all things into subjection to him. In doing so the place of the new Jerusalem is being prepared, that where he is she may be also.   ^