The same day Pharaoh commanded the taskmasters of the people and their foremen,
6. And Pharaoh commanded. We shall more clearly perceive, as the narrative proceeds, that these taskmasters and officers were taken from amongst the children of Israel, although we have before read that some were Egyptians. But, as tyrants are ingenious in securing their own interests, Pharaoh in his subtlety wished to provide that none should escape, but that all alike should be brought in turn to the labor.
Finding that Pharaoh had no veneration at all for God, Moses and Aaron next try whether he had any compassion for Israel, and become humble suitors to him for leave to go and sacrifice, but in vain. I. Their request is very humble and modest, Exo 5:3. They make no complaint of the rigour they were ruled with.
Commenting on Exodus 5:3-9
And Pharaoh commanded the same day the taskmasters of the people,.... Who were Egyptians, and whom Pharaoh sent for the same day, to give them orders to oppress them yet more and more, so far was he from complying with their request: and their officers; who were Israelites, and were under the taskmasters, and accountable to them for each man's work that they had the...