Exodus 10:1-2
And the LORD said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might shew these my signs before him:  And that thou mayest tell in the ears of thy son, and of thy son’s son, what things I have wrought in Egypt, and my signs which I have done among them; that ye may know how that I am the LORD.

The things that God does are not just for the benefit of those who experience them directly.  The signs and wonders that God was doing in Egypt were not just for this time, not just for this place, and not just for these people.  The things that God was doing to reveal Himself to mankind and to make Himself known were not intended just for this generation, but for future generations, as well.  There was to be a continual remembrance of the signs in Egypt from generation to generation so that they could know God in the same way as those in Moses’ day.

And the work that God was doing was not just for Israel to see and know and gain an understanding of who God is and what He can do, but for the Egyptians to see and know, as well.  The nations around Israel at this time were coming to understand that the God of Israel was different than their gods.  And as they continued moving forward, as the news spread of what was happening, others would come to fear Him, as well.  Non-Israelites would be part of the camp as they chose to serve this God instead.

And these things that God did so long ago can benefit us even today.  We can understand the limitless nature of God, His power, His faithfulness.  We can see through these stories the sovereignty of God, our place below Him, and gain an understanding of where we can fit into the story.  Through Scripture, we see all the things about God that He wants us to know about Him so that those things will affect the way we live our lives and the choices we make and the path we take.

But the key was that they had to talk about it, to tell others of all these things that they experienced.  They had to make known the workings of God in Egypt so that others could pass those stories on when they were gone and it could keep spreading far and wide and down through the ages.  And we are to keep telling, as well.  We can’t let the truth of God fade into the background or disappear into history, but we must keep passing it on.  We can share with others the stories of Scripture that reveal an unchanged God that they can come to know and follow, as well.