Presented in survey-style and with some weaknesses in the writing, this is still a very valuable survey of a niche but important area of the doctrine of hell. The theology presented here is generally excellent.
Excerpts
57
A final and eternal separation is spoken of here, and in in which the damned shall gaze from the outer darkness at the warm fellowship of the saints and their reward.
69, quoting Gerstner
Since God cannot be made happier, being ever and infinitely blessed, hell was made, not for him but for heaven.
110
Those in heaven must therefore have an extensive knowledge of pain, sin, suffering and death while residing in a state of joy with God.
120
In Revelation 18:20 this rejoicing may even be said to be a command. "Rejoice over her, thou heaven, and ye apostles and prophets; for God hath avenged you on her." It is not a weakness for heaven to rejoice over the downfall of the wicked; it is here commanded!
144
In heaven, there will be shouting of "Amens" over these "Cursed be's" that God proclaims in judgment. In heaven the saints will praise all of God's judgments.