Exodus 7:1  “…I have made you as God to Pharaoh…”
Representative.  Someone Pharaoh could see.  Too bad Moses had to have Aaron there.  Might have had more impact if Pharaoh were speaking directly to “God” instead of through a “prophet.”  Should inspire us to obey what God says.  We know He only does the absolute best.  No reason not to except for our sin of disobedience and self centeredness.

3  “…multiply My signs and My wonders…”
He’s creating a scenario where He can cause a buildup of His power and majesty.  Also, He’ll be attacking all excuses and false gods.

5  “…Egyptians shall know that I am the LORD…”
One of the results of God’s power.  The Egyptians will learn who GOD is.  They’ll know He is not just one of their nature gods.

7  “…Moses was eighty years old and Aaron eighty-three years old…”
So, Moses was the youngest.  Miriam, Aaron, and then Moses.  Moses was eighty at this time, and we think he was forty when he left Egypt and was forty years tending sheep.  Not sure which we know and which we extract.  Will have to look that up.

10  “…Aaron cast down his rod…”
Not Moses’s rod, but Aaron’s.  Didn’t seem to matter which.  Power was of God, not the rods.

12  “…they became serpents. But Aaron’s rod swallowed up their rods”
Some debate over whether the magicians actually turned their rods to serpents or did so by sleight of hand.  Seems there could be some hint of deception displayed in the original words used.  However, the following action by the serpent from Aaron’s rod was the determining factor.  It consumed the other serpents showing its superior power.  Commentary also mentioned God may have allowed the magicians to use their evil abilities to set up a show down in the future.  There will come a point where they can’t produce what God does, which will prove His superior power to theirs.

20  “…he lifted up the rod and struck the waters that were in the river, in the sight of Pharaoh and in the sight of his servants…”
God tells them to use Aaron’s rod again and strike the waters of Egypt in the sight of Pharaoh so he can see who sends the plague.  Of course the magicians do the same, but apparently they can’t undo what God does.  Several days pass, and all the fish die.  This showed God’s power over the Nile which gave the Egyptians their ability to grow crops and harvest fish.  Their fresh water supply and food sources were destroyed.

24  “…dug all around the river…”
Had to dig wells to provide drinking water.  God’s mercy in that He didn’t take away all their sources, just the rivers and streams and what water they had stored thus far.  They had to work to find new sources.

I hope you enjoy reading and studying His word.  May it accomplish what He desires.  Please feel free to comment or post questions.  Thanks for reading!

Scripture taken from the New King James Version®. Copyright © 1982 by Thomas Nelson. Used by permission. All rights reserved.