Exodus 1:11, 14, 16, 22

Therefore they set taskmasters over them to afflict them with their burdens. And they built for Pharaoh supply cities, Pithom and Raamses.

And they made their lives bitter with hard bondage—in mortar, in brick, and in all manner of service in the field. All their service in which they made them serve was with rigor.

and he said, “When you do the duties of a midwife for the Hebrew women, and see them on the birthstools, if it is a son, then you shall kill him; but if it is a daughter, then she shall live.”

So Pharaoh commanded all his people, saying, “Every son who is born you shall cast into the river, and every daughter you shall save alive.”