We think of existence most crudely as just matter. A rock exists. But what of spirit? In what way does a cause exist? The First Cause Argument is apparently about causes existing. What are causes?
Causes are related to ordered pairs (x,y) where y is said to follow from x and x to cause y. A function is a collection of ordered pairs where no first element is paired with two different following elements.
Are the existence or nature of God linked to functions? What about the Holy Spirit? Or the Logos?
How much did these concepts from theology influence the subsequent development of these ideas in math and physics?
Is the idea of function derived from causality?