1 The Lord said to Moses, “Yet one plague more I will bring upon Pharaoh and upon Egypt. Afterward he will let you go from here. When he lets you go, he will drive you away completely. 2 Speak now in the hearing of the people, that they ask, every man of his neighbor and every woman of her neighbor, for silver and gold jewelry.” 3 And the Lord gave the people favor 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.
-The people became so fearful and respectful of the Hebrews that they were able to go door to door to the Egyptians and ask for silver and gold jewelry and the Egyptians handed it over willingly. This too was part of God’s plan to harden Pharaoh’s heart or else how would the Israelites have wealth.
4 So Moses said, “Thus says the Lord: ‘About midnight I will go out in the midst of Egypt, 5 and every firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the slave girl who is behind the handmill, and all the firstborn of the cattle. 6 There shall be a great cry throughout all the land of Egypt, such as there has never been, nor ever will be again. 7 But not a dog shall growl against any of the people of Israel, either man or beast, that you may know that the Lord makes a distinction between Egypt and Israel.’ 8 And all these your servants shall come down to me and bow down to me, saying, ‘Get out, you and all the people who follow you.’ And after that I will go out.” And he went out from Pharaoh in hot anger. 9 Then the Lord said to Moses, “Pharaoh will not listen to you, that my wonders may be multiplied in the land of Egypt.” 10 Moses and Aaron did all these wonders before Pharaoh, and the Lord hardened Pharaoh’s heart, and he did not let the people of Israel go out of his land.
-It says Moses went out in hot anger from Pharaoh after delivering this message. There are a lot of possibilities to what this could mean and how Moses attitude could be so sour at this point. Perhaps in being God’s spokesman, Moses has started to become more like Him and has the same wrath against sin and stubbornness as God has. I have talked about before that anytime anything miraculous happens, the Holy Spirit is at work. For every miracle Moses performs, it is possible the more of God rubs off on Him. It could be too that Moses has simply lost patience and wants to not have to come back and go through the same procedure to speak to Pharaoh which he has now done 10 times not including reporting to the Israelites what had happened. Moses may be tired and indignant now not just towards Pharaoh but towards the whole situation. Perhaps too that Moses now limits the death of Egyptians even though he killed one in the past and doesn’t want to see the firstborn sons of all Egyptians parish. We are told enough to know for sure. It must have been ever more frustrating when God told Moses that even this will not work yet.
Facebook comment by Matthew Von Hobe:
Track the progression in Moses’ confidence: God showed up at the burning bush and said you’re the man and Moses said, nice idea but I don’t think so. God said alright, I’ll give you Aaron temporarily to prop yourself up. In the first three plagues God spoke to Moses, Moses spoke to Aaron, Aaron spoke to Pharaoh and took Moses’ staff and did the miracle. But slowly Moses was gaining confidence and on the next three miracles God did not use Moses’ staff at all. God spoke to Moses, Moses spoke to Aaron and the two of them together did the miracle. At this point Moses was graduated and for the next three miracles he didn’t need Aaron. God spoke to Moses, Moses spoke to Pharaoh and then took his own staff and did the miracle. God didn’t need Moses or Aaron for the 10th plague