And there was a famine in the land besides the former famine that was in the days of Abraham, and Isaac went to Abimelech king of the Philistines in Gerar. Why the need to mention the famine in the days of Abraham? Ramban explains that people still spoke of that famine, how on its account Abraham traveled to Egypt and was enriched there. Now there was another famine, Isaac did not leave the environs of the land of Israel and still he reaped that year a hundredfold, and the LORD blessed him. And the man became ever greater…This was to show the people that it is God’s blessing that ensures a person’s success.