:
1 And the LORD said unto Moses, Yet will I bring one plague more upon Pharaoh, and upon Egypt; afterwards he will let you go hence: when he shall let you go, he shall surely thrust you out hence altogether. 2 Speak now in the ears of the people, and let every man borrow of his neighbour, and every woman of her neighbour, jewels of silver, and jewels of gold. 3 And the LORD gave the people favour in the sight of the Egyptians. Moreover the man Moses was very great in the land of Egypt, in the sight of Pharaoh's servants, and in the sight of the people. 4 And Moses said, Thus saith the LORD, About midnight will I go out into the midst of Egypt: 5 And all the firstborn in the land of Egypt shall die, from the firstborn of Pharaoh that sitteth upon his throne, even unto the firstborn of the maidservant that is behind the mill; and all the firstborn of beasts. 6 And there shall be a great cry throughout all the land of Egypt, such as there was none like it, nor shall be like it any more. 7 But against any of the children of Israel shall not a dog move his tongue, against man or beast: that ye may know how that the LORD doth put a difference between the Egyptians and Israel. 8 And all these thy servants shall come down unto me, and bow down themselves unto me, saying, Get thee out, and all the people that follow thee: and after that I will go out. And he went out from Pharaoh in a great anger. 9 And the LORD said unto Moses, Pharaoh shall not hearken unto you; that my wonders may be multiplied in the land of Egypt. 10 And Moses and Aaron did all these wonders before Pharaoh: and the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go out of his land.
[AD 390] Gregory of Nazianzus on Exodus 11:2
What say you? Thus it has pleased him that you should come forth out of Egypt, the iron furnace; that you should leave behind the idolatry of that country and be led by Moses and his lawgiving and martial rule. I give you a piece of advice which is not my own, or rather which is very much my own, if you consider the matter spiritually. Borrow from the Egyptians vessels of gold and silver. With these take your journey. Supply yourself for the road with the goods of strangers, or rather with your own. There is money owing to you, the wages of your bondage and of your brick making. Be clever on your side too in asking retribution. Be an honest robber. You did suffer wrong there while you were fighting with the clay (that is, this troublesome and filthy body) and were building cities foreign and unsafe, whose memorial perishes with a cry. What then? Do you come out for nothing and without wages? But why will you leave to the Egyptians and to the powers of your adversaries that which they have gained by wickedness and will spend with yet greater wickedness? It does not belong to them. They have ravished it and have sacrilegiously taken it as plunder from him who says, “The silver is mine and the gold is mine, and I give it to whom I will.” Yesterday it was theirs, for it was permitted to be so. Today the master takes it and gives it to you that you may make a good and saving use of it. Let us make to ourselves friends of the mammon of unrighteousness, that when we fail, they may receive us in the time of judgment.

[AD 253] Origen of Alexandria on Exodus 11:3
When Moses had come to the place which God shows him, he is not permitted to ascend, but first God says to him, “Loose the tie of the shoes from your feet.” None of these things are said to Abraham and Isaac, but they ascend and do not put aside their shoes. The reason for this is perhaps that although Moses was “great,” he was nevertheless coming from Egypt, and some fetters of mortality were bound to his feet. Abraham and Isaac, however, have none of these, but “they come to the place.”

[AD 253] Origen of Alexandria on Exodus 11:3
About Isaac it is said that “he grew strong until he became great, exceedingly great.” Moses was called “great,” and John the Baptist was called “great,” and now Jesus is called “great,” and after this no one is any longer called “great.” For before he who is truly “great” had come, in comparison with the rest of men, the saints whom we mentioned earlier were called “great.”

[AD 311] Methodius of Olympus on Exodus 11:4
Midnight stands for the reign of the antichrist, when the destroying angel will pass over the houses.

[AD 585] Cassiodorus on Exodus 11:4
The words “I rose at midnight” are not without value. They knew that at that hour the firstborn of the Egyptians were smitten, that at that time the bonds of Peter, Paul and Silas who lay in prison were loosed, that the bridegroom would also come at midnight.

[AD 636] Isidore of Seville on Exodus 11:5
Finally the firstborn of the Egyptians are destroyed. They are the principalities and powers and the rulers of this world of darkness. Or they are the originators and inventors of the false religions that existed in this world. The truth of Christ put an end to these religions and wiped them out, along with their inventors.

[AD 1781] Richard Challoner on Exodus 11:10
The Lord hardened: See the annotations above, chap. 4. 21, and chap. 7. 3.