Volume eight contains "Human Nature" in which Boston exhorts us on the depravity of man. This is somewhat of a harsh wake up call; it reveals furthermore the great blessing we have in Christ's forgiveness. "The Covenant of Grace" is also included and it's refreshing to read and be reminded of the hope we have in Christ. Boston teaches us on how we can't ever understand the grandness of our forgiveness unless we understand the tragedy of our sin.