In defending creationism, creationists will always uphold the inescapable fact that life only comes from pre-existing life. To that, evolutionists will ask the age old question, If all life comes from preexisting life, who created God?
There is a very simple answer that proves that God did not need to be created and it is found in the first law of thermodynamics.
That law provides us with a real life example of something that cannot be created or destroyed because within the universe, it is eternal.
The first law of thermodynamics observes the principle of conservation of energy. Energy can be transformed, i.e. changed from one form to another, but cannot be created nor destroyed.
So energy is eternal. It cannot be created, nor destroyed because it always exists.Now the second law of thermodynamics tells us that energy is eternal within a closed system. Some will argue that the universe itself is the closed system and that is why the energy is eternal.
However, the universe did not always exist, and considering that the closed system cannot be the 'source' of the energy, as the first law states, then the energy must have come from 'outside' the universe. So where did the energy come from in the first place?
Romans 1:19-20
because what may be known about God is manifest among them, for God made it manifest to them. 20 For his invisible [qualities] are clearly seen from the worlds creation onward, because they are perceived by the things made, even his eternal power and Godship, so that they are inexcusable
Jermiah 10:12
He is the Maker of the earth by his power
Isaiah 40:28
Have you not come to know or have you not heard? Jehovah, the Creator of the extremities of the earth, is a God to time indefinite. He does not tire out or grow weary
So if someone asks you 'who made God', tell them to consider the scientific evidence as found in the first law of thermodynamics.