The following is another argument from an atheist who seeks to deny God’s existence. He proposes the impossibility of God’s existence based on God’s immutable nature. Immutability means unchangeableness. He confuses the idea of God’s nature with the act of God. The argument fails miserably.

An argument against God’s existence from the impossibility of an immutable creator:

1. God is immutable
2. God created the universe
3. An act of creation requires a state-change in the creator (from not having exercised its will to having exercised its will)
4. An immutable being cannot undergo a state-change
5. Therefore an immutable being cannot create the universe
6. Therefore God does not exist

Refutation

1. God is immutable
   1. Immutability must be defined.  It means “unchangeableness.”
   2. In Christian theology, God’s immutability describes his nature and does not mean he cannot think, know, or experience.
   3. God can be immutable and decide to perform an action. The action is not the same thing as his nature.
2. God created the universe
3. An act of creation requires a state-change in the creator (from not having exercised its will to having exercised its will)
   1. The nature of free will is to exercise that will. A decision is not a change of nature but of mind, and this does not violate the immutability of God’s nature.
4. An immutable being cannot undergo a state change
   1. The argument fails to clarify the difference between unchangeable in nature and the ability within that nature to make a decision.
5. Therefore an immutable being cannot create the universe
6. Therefore God does not exist
   1. The argument fails for the reasons mentioned above.