Exodus 1:8-11

8And there arose a new king over Egypt, who did not know Joseph.

9And he said to his people, Behold, the people of the children of Israel are more numerous and stronger than we.

10Come on, let us deal wisely with them, lest they multiply, and it come to pass that, if war occur, they take side with our enemies and fight against us, and go up out of the land.

11And they set over them service-masters to oppress them with their burdens. And they built store-cities for Pharaoh, Pithom and Rameses.