OK Christians. your chance. Convince me of God.

[Mystic]

Agreed, the argument I offered is invalid, but in what way does it differ from your own?

Ok the first argument I worded it like this.

Not A -> B
Not B
Therefore A.

Then I think you got confused with double negation,

So I re-wrote as

A -> B
Not B
Therefore Not A

Both of these are logically valid.

From other then God. The negation of that is "from God". The negation of "from God" is from "other then God".

Yours was written like this.

A -> B
B
Therefore A.

Which is invalid.