Genesis 26 focuses on Isaac's experiences during a famine and his interactions with the Philistines.
During a famine, God instructed Isaac not to go to Egypt but to stay in Gerar, reaffirming the covenant promises made to Abraham.
Like his father Abraham had done, Isaac told the people of Gerar that Rebekah was his sister rather than his wife, fearing they might kill him because of her beauty. King Abimelech discovered the truth when he saw Isaac "sporting with" Rebekah and confronted him. He commanded his people not to harm Isaac or Rebekah.
Isaac prospered greatly in Gerar, growing wealthy with flocks, herds, and servants. His success caused the Philistines to envy him. The Philistines had filled up the wells that Abraham had dug. Abimelech asked Isaac to leave because he had become too powerful.
Isaac moved to the valley of Gerar and reopened his father's wells. His servants dug new wells, but local herdsmen quarreled with Isaac's men over the water rights. After digging several contested wells, Isaac finally dug one that caused no disputes.
Isaac moved to Beersheba, where God appeared to him and reassured him of the covenant promises. Abimelech and his officials sought a peace treaty with Isaac, recognizing that God was with him. They shared a feast and made a covenant.
Esau, at age forty, married two Hittite women, which greatly upset Isaac and Rebekah.
