I felt like when I spoke on July 18, I really rushed through the introduction to Jesus' high priest role. So I wanted to hit the main thought again here.
The priestly Christology found in Hebrews probably has a bunch of very important implications for Christians, but the two I really zeroed in on were: 1) Jesus is our worship leader, and 2) Jesus is our mediator. The two are probably not that different in the abstract, but I did make a couple of distinctions for analytical purposes. For now, I will just cover the first.
For me, understanding that Jesus is our worship leader came from reading Worship, Community & the Triune God of Grace by Torrance. In this book, Torrance discusses something he calls the Incarnational Trinitarian Model of Worship. To be incredibly brief about this, essentially what I learned from Torrance is Jesus has two roles in this model: 1) he is the spoken word of forgiveness from God to humanity (the God-humanward movement) and 2) he is the perfect response of worship back to God (human-Godward movement).
Interestingly, the writer of Hebrews alludes to the same double-role when, in chapter 5:1 (and elsewhere), he discusses how the high priest offers "gifts and sacrifices." 9:14 defines "gifts and sacrifices" a little more: the gift is forgiveness, a clean conscience, redemption; the sacrifice of course, is the blood of Christ. Really, these could be taken as same things Torrance describes in his worship model as the dual functions of Christ. The gift of forgiveness is spoken in Christ, and Christ responds in perfect humility or sacrifice--the one and only perfect act of worship.
What this link ultimately means then, is that as we continue studying Hebrews and worship, and evaluating our worship and liturgy, we have to understand that we must come under the leadership of Christ in our worship. Of course, this has numerous practical implications. For me, this means in our liturgy that the song selection and other aspects of our services must point us to Jesus. It also means that our worship, far from just appealing to our own sensibilities and preferences, must be in line with Christ first.
We cannot hope to offer a perfect sacrifice of worship, as Jesus did. But as we come under his authority and leadership, we can learn to be better worshippers.
Jeff