When the famine that Yosef predicted came true, the Torah shifts its attention from Egypt, and turns to Canaan. Yakov and his family had to deal with this as well.
Initially, our commentators tell us that Yakov still had food, while others around him, did not. It was only later, that his food ran out and he sent his sons to bring back food.

Yakov tried to drive home a message not only to his sons, but for all future generations. He told them not to flaunt the fact........

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