Proof: I am God
Premise, just for this sub-argument: “If A is true, I am God”. This is called premise A.
Suppose that A is true:
If A is true, I am God
So, I am God (still supposing A)
We’ve shown that IF A is true then I am God
But that’s what A says
So therefore A is true
So I am God.
However, I’ll tell you now that I am not God.