In this Bible study podcast, Andy Davis goes line by line through Hebrews 

-22. The author teaches that Christ is the mediator of a New Covenant, established by His death and the shedding of His blood.

Hebrews 9:23-28 Episode 23 - Christ’s Once-For-All Sacrifice Is Sufficient

This Podcast from Two Journeys Ministry includes sermons, lectures, and classes from Dr. Andrew M. Davis, the senior pastor of the First Baptist Church of Durham. 

Two Journeys exists to help Christians make progress in the two journeys of the Christian life, the internal journey of sanctification and the external journey of gospel advancement. We do this by exporting biblical teaching for the good of Christ’s Church and for the glory of God.