This sets the pattern for the revelation of His governance. Now here we begin to see His sovereignty over the inanimate aspects of the creation. He speaks, and light appears.
He speaks. He governs the movement of water, and says, Water, I want you to go here, and land, I want you to rise up here. That is what a governor does. He manages what He made. Water seeks its own level, which then means that God designed that the water go into certain places. So we see God, right from the beginning, managing what He is creating. Here we come to the Flood: