Disproving Odin - An Experiment in arguing with a theist with Theist logic

[SteveII]

Extrapolating From What We Know Of Cause And Effect Does Not Lead Necessarily to God.

Here is my own little syllogism:

1 The present and past forms of all material things each have a past material cause(s).
2 The universe is a material thing.
3 Therefore, the universe has a past material cause, and that cause has a past material cause an so on for eternity.

I do not offer this as proof of an infinite godless regression, but only as demonstration of the futility of using our knowledge of cause and effect within the universe to extrapolate what occurred before the universe (assuming there is a before) or outside the universe.

Premise (1) is only true within the universe. 

Is premise (2) true? I'm not sure it is. I think it is the sum or all material things--not another thing at the end of the list of all other material things. The distinction is important.

If that is true, then conclusion (3) is a composition fallacy:

The fallacy of composition arises when one infers that something is true of the whole from the fact that it is true of some part of the whole (or even of every proper part). https://en.wikipedia.org/wiki/Fallacy_of_composition

So...not really a demonstration of anything.