Exodus 1:12-14, 22

But the more they afflicted them, the more they multiplied and the more they spread out, so that they were in dread of the sons of Israel. The Egyptians compelled the sons of Israel to labor rigorously; and they made their lives bitter with hard labor in mortar and bricks and at all kinds of labor in the field, all their labors which they rigorously imposed on them.

Then Pharaoh commanded all his people, saying, “Every son who is born you are to cast into the Nile, and every daughter you are to keep alive.”