The author of Hebrews wanted to let some of the Hebrew believers know that the new covenant honors the old covenant by fulfilling it through Jesus Christ. Jesus paid the price on the cross and covered us once and for all though the His blood that was shed on Calvary.
It is awesome now reading the psalms proclaiming that with fear of the LORD we lack nothing (psalms 34:9) Fear and reverence puts our trust in Jesus allowing Him to work on our lives today. He is our righteous Savior amen!