67. These things about heaven as the Greatest Man are set forth, because what follows in regard to heaven cannot be at all comprehended until these things are known, neither can there be any clear idea of the form of heaven, of the conjunction of the Lord with heaven, of the conjunction of heaven with man, of the influx of the spiritual world into the natural, or any idea at all of correspondence-subjects to be treated of in their proper order in what now follows. To throw some light on these subjects, therefore, the above has been premised.