Ages in Chaos is a book by the controversial writer Immanuel Velikovsky, first published by Doubleday in 1952, which put forward a major revision of the history of the Ancient Near East, claiming that the histories of Ancient Egypt and Ancient Israel are five centuries out of step. He followed this with a number of other works where he attempted to complete his reconstruction of ancient history, collectively known as the Ages in Chaos series.
Velikovsky's work has been harshly criticised, including even by some fellow chronological revisionists.
Velikovsky had put forward his ideas briefly in Theses for the Reconstruction of Ancient History in 1945, where he claimed that the history of the ancient Near East down to the time of Alexander the Great is garbled, but Ages in Chaos was his first full-length work on the subject.
His starting point for the first volume of the series was that the Exodus took place not, as orthodoxy has it, at some point during the Egyptian New Kingdom, but at the fall of the Middle Kingdom. In this and later volumes, he made heavy use of the concept of "ghost doubles" or alter-egos: historical figures who were known by different names in two different sources (e.g. Egyptian and Greek) and were considered to be entirely different people living in different centuries, but who he proposed to be actually erroneously dated accounts of the same individuals and events.
First he claimed that the Ipuwer Papyrus came from the beginning of Egypt's Second Intermediate Period, and that this was an Egyptian account of the Plagues of Egypt. He then identified Tutimaios as the Pharaoh of the Exodus (much earlier than any of the mainstream candidates), the Hyksos with the biblical Amalekites, the Egyptian Pharaoh Hatshepsut with the Biblical Queen of Sheba, the land of Punt with Solomon's kingdom, and Pharaoh Thutmose III with the Biblical King Shishak. He claimed that the Egyptian Amarna letters from the late 18th Dynasty describe events from the kingdoms of Israel and Judah, from roughly the time of King Ahab.