Migration out of Mesopotamia during the Middle Bronze Age required navigating harsh terrain. Flocks and herders followed established trade routes from Haran down into the southern Levant. Famine regularly forced these nomadic groups to abandon the hills of Canaan and push further south into the Nile Delta. Survival depended on securing water rights and negotiating passage with established walled city-states.
Archaeological excavations at Tell Balata identify it as the Canaanite city of Shechem. Egyptian Execration texts from the 19th century b.c. list Shechem as a hostile territory. Tomb paintings at Beni Hasan from the exact same period depict Asiatic nomads moving into Egypt seeking trade and grain. These records match the biblical description of Abram traveling from Shechem to the Egyptian border to escape starvation.
Upon reaching the Egyptian border, the narrative strips away any religious pretense. Abram tells his wife Sarai to lie about her identity to protect his own life. He leverages her appearance to gain livestock, silver, and servants from the pharaoh. The patriarch operates entirely on self-preservation in a foreign land because a severe drought leaves him no alternative.
Hunger removes the luxury of honesty when a ruler holds the grain.
Disease strikes the Egyptian royal house after the woman enters the palace. The pharaoh discovers the lie and immediately expels the camp. He orders his border guards to escort the patriarch and his newly acquired wealth out of the territory. The expulsion secures the immediate physical survival of the tribe. The nomads return to the Canaanite hills with more livestock and silver than they held before the famine.