Exodus 1:11-12

11So the Egyptians made the Israelites work as their slaves. The Egyptian masters made the Israelites do very hard work. They had to build cities for the king, Pharaoh, where he could store food for his people. The names of the cities were Pithom and Rameses.

12The Egyptians made the Israelites work more and more. But the Israelites still became more in number. They had many children and they lived in every part of the country. Because of this, the Egyptians began to be afraid of them.