Jesus is God’s final word
The writer of Hebrews wants to capture the attention of the first hearers. So it is a Majestic and impressive opening.
This is what the first hearers needed. They needed to have Jesus recapture their attention. They were distracted and drifting away because of the threat of a fresh experience of suffering.
As we start the year it is good for us to refocus on Jesus as the centre of our lives.