4 Then Moses said, "Thus says the Lord: 'About midnight I will go out into the midst of Egypt; 5 and all the firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the female servant who is behind the handmill, and all the firstborn of the animals. 6 Then there shall be a great cry throughout all the land of Egypt, such as was not like it before, nor shall be like it again. 7 But against none of the children of Israel shall a dog move its tongue, against man or beast, that you may know that the Lord does make a difference between the Egyptians and Israel.' 8 And all these your servants shall come down to me and bow down to me, saying, 'Get out, and all the people who follow you!' After that I will go out." Then he went out from Pharaoh in great anger. 9 But the Lord said to Moses, "Pharaoh will not heed you, so that My wonders may be multiplied in the land of Egypt." 10 So Moses and Aaron did all these wonders before Pharaoh; and the Lord hardened Pharaoh's heart, and he did not let the children of Israel go out of his land.
Matthew Henry's Commentary on Exodus 11:4-10
Commentary on Exodus 11:4-10
(Read Exodus 11:4-10)
The death of all the first-born in Egypt at once: this plague had been the first threatened, but is last executed. See how slow God is to wrath. The plague is foretold, the time is fixed; all their first-born should sleep the sleep of death, not silently, but so as to rouse the families at midnight. The prince was not too high to be reached by it, nor the slaves at the mill too low to be noticed. While angels slew the Egyptians, not so much as a dog should bark at any of the children of Israel. It is an earnest of the difference there shall be in the great day, between God's people and his enemies. Did men know what a difference God puts, and will put to eternity, between those that serve him and those that serve him not, religion would not seem to them an indifferent thing; nor would they act in it with so much carelessness as they do. When Moses had thus delivered his message, he went out from Pharaoh in great anger at his obstinacy; though he was the meekest of the men of the earth. The Scripture has foretold the unbelief of many who hear the gospel, that it might not be a surprise or stumbling-block to us, Romans 10:16. Let us never think the worse of the gospel of Christ for the slights men put upon it. Pharaoh was hardened, yet he was compelled to abate his stern and haughty demands, till the Israelites got full freedom. In like manner the people of God will find that every struggle against their spiritual adversary, made in the might of Jesus Christ, every attempt to overcome him by the blood of the Lamb, and every desire to attain increasing likeness and love to that Lamb, will be rewarded by increasing freedom from the enemy of souls.