In Genesis 42:2, Jacob immediately commands his sons to go buy grain — a direct narrative continuation of his realization in verse 1.

In Genesis 41:54, the onset of famine is described — the very event that prompts Jacob's later discovery of grain in Egypt.

In Genesis 41:57, all nations come to Egypt for grain — this is the background that allows Jacob to hear about the supply.

Genesis 43:2 continues the story: after eating the grain, Jacob again commands his sons to go buy food.

Acts 7:12 directly retells this event: 'when Jacob heard that there was grain in Egypt, he sent our fathers the first time.'