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. They plead that the journey they designed was not a project formed among themselves, but that their God had met with them, and called them to it. They beg with all submission: We pray thee. The poor useth entreaties; though God may summon princes that oppress, it becomes us to beseech and make supplication to them. What they ask is very reasonable, only for a short vacation, while they went three days' journey into the desert, and that on a good errand, and unexceptionable: "We will sacrifice unto the Lord our God, as other people do to theirs;" and, lastly, they give a very good reason, "Lest, if we quite cast off his worship, he fall upon us with one judgment or other, and then Pharaoh will lose his vassals."
II. Pharaoh's denial of their request is very barbarous and unreasonable, Exo 5:4-9.
1. His suggestions were very unreasonable. (1.) That the people were idle, and that therefore they talked of going to sacrifice. The cities they built for Pharaoh, and the other fruit of their labours, were witnesses for them that they were not idle; yet he thus basely misrepresents them, that he might have a pretence to increase their burdens. (2.) That Moses and Aaron made them idle with vain words, Exo 5:9. God's words are here called vain words; and those that called them to the best and most needful business are accused of making them idle. Note, The malice of Satan has often represented the service and worship of God as fit employment for those only that have nothing else to do, and the business only of the idle; whereas indeed it is the indispensable duty of those that are most busy in the world.
2. His resolutions hereupon were most barbarous. (1.) Moses and Aaron themselves must get to their burdens (Exo 5:4); they are Israelites, and, however God had distinguished them from the rest, Pharaoh makes no difference: they must share in the common slavery of their nation. Persecutors have always taken a particular pleasure in putting contempt and hardship upon the ministers of the churches. (2.) The usual tale of bricks must be exacted, without the usual allowance of straw to mix with the clay, or to burn the bricks with, that thus more work might be laid upon the men, which if they performed, they would be broken with labour; and, if not, they would be exposed to punishment.

The task-masters of the people and their officers - The task-masters were Egyptians, (see Clarke on Exo 1:11 (note)), the officers were Hebrews; see Clarke below Exo 5:14 (note). But it is probable that the task-masters Exo 1:11, who are called שרי מסים sarey missim, princes of the burdens or taxes, were different from those termed taskmasters here, as the words are different; נגשים nogesim signifies exactors or oppressors - persons who exacted from them an unreasonable proportion either of labor or money.
Officers - שטרים shoterim; those seem to have been an inferior sort of officers, who attended on superior officers or magistrates to execute their orders. They are supposed to have been something like our sheriffs.

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 inspection and care of:

saying, as follows.

Pharaoh commanded--It was a natural consequence of the high displeasure created by this interview that he should put additional burdens on the oppressed Israelites.

taskmasters--Egyptian overseers, appointed to exact labor of the Israelites.

officers--Hebrews placed over their brethren, under the taskmasters, precisely analogous to the Arab officers set over the Arab Fellahs, the poor laborers in modern Egypt.