The new books by Greg Boyd, The Crucifixion of the Warrior God, is a great book. Please read it! But just know that despite all the great insights in the book, I believe that the central thesis is wrong. Rather than withdraw from sin, God dives in.
My book on the Atonement of God begins with a summary of three views on the atonement, and then I define and defend a fourth view, which is a Non-Violent view of the atonement. Following this, I summarize 10 ways the Non-Violent atonement transforms your theology to look more like Jesus Christ.
The Bible was not written primarily to reveal God to us, but was written to reveal the same thing that Jesus revealed on the cross, which is that we scapegoat people in the name of God. And until we see this, we will never read the Old Testament correctly, nor will we ever understand God properly.