One must distinguish between active and passive creation ( creatio activa and passiva). The former has in view the act of creating in God, the latter, the universe as created. Of the former Voetius says, “Creation, actively considered, is not a real change because by it God is not changed by that act; it only requires a new relationship of the Creator to what is created. And this new relation, which is not real in God, can therefore not effect a real change in Him.” And Wollebius says: “The creation is not a change in the Creator, but a change in the creature, a change from potential being to actual being.”

Geerhardus Vos, Reformed Dogmatics, 221.