'Slave' in the Bible
During that long period of time the king of Egypt died, and the Israelites groaned because of the slave labor. They cried out, and their desperate cry because of their slave labor went up to God.
That same day Pharaoh commanded the slave masters and foremen who were over the people:
So the slave masters of the people and their foremen went to the Israelites and said, "Thus says Pharaoh: 'I am not giving you straw.
The slave masters were pressuring them, saying, "Complete your work for each day, just like when there was straw!"
The Israelite foremen whom Pharaoh's slave masters had set over them were beaten and were asked, "Why did you not complete your requirement for brickmaking as in the past -- both yesterday and today?"
and all the firstborn in the land of Egypt will die, from the firstborn son of Pharaoh who sits on his throne, to the firstborn son of the slave girl who is at her hand mill, and all the firstborn of the cattle.