Genesis 42:1-6

1And Jacob saw that there was grain in Egypt, and Jacob said to his sons, Why do ye look one upon another?

2And he said, Behold, I have heard that there is grain in Egypt; go down thither and buy [grain] for us from thence, in order that we may live, and not die.

3And Joseph's ten brethren went down to buy [grain] out of Egypt.

4But Benjamin, Joseph's brother, Jacob sent not with his brethren; for he said, Lest mischief may befall him.

5So the sons of Israel came to buy [grain] among those that came; for the famine was in the land of Canaan.

6And Joseph, he was the governor over the land — he it was that sold [the corn] to all the people of the land. And Joseph's brethren came and bowed down to him, the face to the earth.