2) Therefore, God can be proven to exist because the idea of God is real, and in the domain of mind (which is also where math has its power) God is real and has existence. If numbers are real then so must be the concept of God.
3) What's more real, the number of apples on a table or the number used to account for them? If one eats all the apples would not the concept of their total number be real even if, now, having eaten the apples, they are not visible to our eyes?
