What Did the Cross Achieve?

"Originally given as the annual Tyndale Biblical Theology Lecture in 1973 at Tyndale House, Cambridge, UK. In this address, Dr. Packer dives deeply in the Bible's teaching on the death of Christ and its atoning significance. Crucially, Packer is also concerned with how Christians and theologians down the centuries have dealt with the question "Is penal substitution one image of the atonement, or the heart of it?" He concludes that it's the heart"--.