Genesis 26:1

Now there was a famine in the land; so Abram went down to Egypt to sojourn there, for the famine was severe in the land.

And Abraham journeyed from there toward the land of the Negev and settled between Kadesh and Shur; then he sojourned in Gerar.

So the sons of Israel came to buy grain among those who were coming, for the famine was in the land of Canaan also.

Then Yahweh spoke to Moses, “Go! Go up from here, you and the people whom you have brought up from the land of Egypt, to the land of which I swore to Abraham, to Isaac, and to Jacob, saying, ‘To your seed I will give it.’

Now it happened in the days when the judges judged, that there was a famine in the land. And a certain man of Bethlehem in Judah went to sojourn in the fields of Moab with his wife and his two sons.

And there was a famine in the days of David for three years, year after year; and David sought the presence of Yahweh. And Yahweh said, “It is for Saul and his bloody house, because he put the Gibeonites to death.”

Yahweh Establishes the Oath with Isaac