This text continues on from 'Heliopolis 1'.and 'Heliopolis 2'. I suggest that Heliopolis, and its ancient priesthood are far more important in the history and development of the West than is currently acknowledged. In the previous texts we intimated that as far as the Judeo-Christian heritage is concerned, there is much to be learned by following the Heliopolis trail. We continue following some of those leads now. In this text we follow a trail from the Priesthood of Heliopolis through to Akhenaten, the Book of Psalms, Genesis 1, and the Gospel of John.