God cannot create another uncreated anything. By creating, you have created, and the result will never be uncreated.
I know that this is central to Christianity. What I am trying to do is walk you through why it is not self-contradictory.
If God has full authority over creation, then he can CHOOSE to do this. If he does not have full authority over creation, then he cannot.
The fact that Jesus was fully Human does not mean that the Eternal, Immortal, unchanging God could Die. NOt in the least. What it does mean is that the Human Body that the Second person of the Trinity entered the World in was truly human and able to die, but the Fully God part of Jesus was not able to be destroyed. However, in becoming Flesh and Dwelling amongst us, Jesus was not less than God, nor was he diminished in his authority over creation.
It is through the passion, death and ressurection of Jesus that we are saved.
Now, HOW it works is a mystery. I cannot and will not be able to explain it. As I have pointed out before, I do not understand women, but I cannot deny that they exist.