Exodus 1:5-9

And all the souls that came out of the loins of Jacob were seventy souls: for Joseph was in Egypt already.

And Joseph died, and all his brethren, and all that generation.

And the children of Israel were fruitful, and increased abundantly, and multiplied, and waxed exceeding mighty; and the land was filled with them.

Now there arose up a new king over Egypt, which knew not Joseph.

And he said unto his people, Behold, the people of the children of Israel are more and mightier than we: