Exodus 1:11, 14, 16, 22
Exodus 1:11 NKJV
Therefore they set taskmasters over them to afflict them with their burdens. And they built for Pharaoh supply cities, Pithom and Raamses.
Exodus 1:22 NKJV
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.”