Acts 7:17-23

But when the time of the promise drew nigh, which God had sworn to Abraham, the people grew and multiplied in Egypt, Till another king arose, which knew not Joseph. The same dealt subtilly with our kindred, and evil entreated our fathers, so that they cast out their young children, to the end they might not live. In which time Moses was born, and was exceeding fair, and nourished up in his father's house three months: and when he was cast out, Pharaoh's daughter took him up, and nourished him for her own son. And Moses was learned in all the wisdom of the Egyptians, and was mighty in words and in deeds. And when he was full forty years old, it came into his heart to visit his brethren the children of Israel.