The book of Hebrews was written primarily, as far as I know, to encourage those who wanted to return to Judaism to keep pursuing Christ. It is interesting how the author reminds the readers that Jesus Christ is indeed the Son of God prophesied long ago in the Old Testament.
In chapter 1, the author uses only the word “Son”. Neither the word “Jesus” nor “Christ” is present. Perhaps the author wants to draw the Jewish Christians back to the “Son” prophesied in the Old Testament. For example, in Psalm 2:12, David tells us to “Kiss the Son”.
In chapter 2, the word “Jesus” appears, but “Christ” is still not present. The author asserts that Jesus is as indeed, as Psalm 8:5, the one who was “made a little lower than angels yet he was crowned with glory”.
In chapter 3, the word “Christ” is finally present. Christos, the “anointed one”. The Son of God, the chosen one, as depicted in the Old Testament, is indeed Jesus Christ! Christ is superior than any other religion. Not only so, we are also together His house. He now dwells among us and we partake in His victory.
What a progression revealing the glorious Christ in these three chapters. Later on, in Chapter 7, we are also told that Christ is the High Priest after the order of Melchizedek. Melchizedek is a type of Christ described in Genesis 14 and Psalm 110,
“The Lord has sworn
and will not change his mind,
“You are a priest forever
after the order of Melchizedek.” (Psalm 110:4)
Quoting from Psalm 110, Hebrew 7:17 writes, “For it is declared:’ You are a priest forever, in the order of Melchizedek.'” From Genesis to Psalm to Hebrews… what an amazing consistency!