Rich,
This great section of scripture is a pause as the writer intends to speak of
The Lord Jesus Christ in the fulness of His person and work.He has already began to discuss the obvious superiority of His person, even His priesthood
in 2:9-17. Linking in, being over Moses,and Joshua[ the law leading us to Christ,Christ leading us to eternal rest] he then wants to introduce psalm 110 into the mix,and the priesthood being greater than earthly or Levitcal priests who die.
As this is so crucial a link to Jesus as the true Israel, , true tabernacle, he pauses fearing that they will drift past,Hebrews 2;1-4 this unfolding of redemptive history, before the judgement of Ad 70.
