Redating the exodus and conquest bimson
The power of the 13th and 14th Dynasties progressively waned, perhaps due to famine and plague.
In about 1650 BC, both dynasties were invaded by the Hyksos, who formed the Fifteenth Dynasty.
Josephus provides the earliest recorded instance of the much repeated false etymology of the term Hyksos, as a Hellenised form of the Egyptian phrase Hekw Shasu, meaning "Shepherd Kings".
This expression begins to appear as early as the late Old Kingdom of Egypt to refer to various Nubian chieftains and in the Middle Kingdom to refer to the Semitic-speaking chieftains of Syria and Canaan.