Exodus 1:11, 15-17, 8

So the Egyptians put slave drivers over them to crush their spirits with hard labor. The Israelites built the cities of Pithom and Rameses to serve as supply centers for the king.

Then the king of Egypt spoke to Shiphrah and Puah, the two midwives who helped the Hebrew women. “When you help the Hebrew women give birth,” he said to them, “kill the baby if it is a boy; but if it is a girl, let it live.” But the midwives were God-fearing and so did not obey the king; instead, they let the boys live.

Then, a new king, who knew nothing about Joseph, came to power in Egypt.