The book of Dream Vision appears to been compiled from an older Canaanite text in the early Persian era and was likely attached to the Astronomical Book from the beginning. The book of Dreams and Visions is likely the first attempt to retell the history of the world from the point of view of sheep. In this case Israeli sheep, who had to contend with Egyptian wolves, Philistine dogs, Babylonian lions, and Persian eagles. The Astronomical Book was written from the view of Methuselah, Enoch's son, which Dream Visions continues, however, the majority of the text could not date to before the early Persian era. The first six chapters of the book seem like it was attached to the Astronomical Book, along with the beginning of chapter 7, which includes the vision of the sky collapsing and the earth being flooded. This vision of Noah's flood matches the description of the world found in the Astronomical Book, which includes a solid sky above the world, with water above it.
After Noah and his three bull sons survived the flood, the species switched from bulls to sheep, indicating the likely point where the original text was extended. These sheep then live out the general history of the Israelites found in the Torah, and some other early Hebrew texts found in the Tanakh (Old Testament). There are a few points where the book of Dream Visions deviates from the other Hebrew texts, such as claiming that the Israelites were descendants of Japheth instead of Shem. Chapters 7 and 8 are both very long in comparison to the first six chapters, supporting the idea that they were an extension to the original work, however, they end with the Persian eagles being destroyed by a God, referred to as the Lord of Sheep, coming down from the sky and slaughtering the Persians and their allies, and then rebuilding a better temple than the temple that was being worshiped at. The author’s view of the temple and the priests that were sent out from it show that he (or she) was not associated with the temple, and viewed the priests as corrupt, a common sentiment expressed in Second Temple era texts.
