In our study, we will see how Jesus Christ is superior to everything that has come before. Although scholars cannot agree on who wrote this, it is pretty obvious that it was written by the apostle Paul. As we shall see, the letter was written to Jewish believers in Jesus Christ that were struggling in their faith.
"In the past God spoke to our forefathers through the prophets at many times and in various ways," NIV translation
The letter starts off with a reminder that God had been active in the lives of the Jewish people for a very long time. The "forefathers" speaks of Abraham, Isaac, & Jacob as well as the leaders that would follow them. God spoke to them in various ways such as through dreams, the law, & prophecy. This was done through various prophets over the years and it was a progression in that no single prophet received the complete plan of God for man's salvation.
"but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom he made the universe." NIV translation
We see, here, that God has sent the Last Word to the Jewish people as well as to the rest of mankind. This Word is His only Son who has been given all things and in fact was there when everything was spoken into existence. (see Genesis 1)
"The Son is the radiance of God's glory and the exact representation of his being, sustaining all things by his powerful word. After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven." NIV translation
Jesus saved us from sin with His death and resurrection but He did not stop there. He is now at the right hand of God in heaven. The right hand is the position of power and inheritance and He is there on our behalf. He not only was there at the creation of all things as we see here that He even keeps things going (sustaining all things). We see here that He sat down there and it is interesting to note that the priests that served God in the temple did not have a place to sit inside the temple. That is because their work was never done. Jesus the High Priest finished the work of purification on the cross and that is why He was able to say it is finished. With the work of salvation completed, He now sits and intercedes with the Father on our behalf.