Marc from Lorraine lays out an outline of how to logically defeat Calvinism. Marc points out that it should be sufficient to just point out one author in the Bible at odds with Calvinism.
Here follow the methodology and some practical aspects.
1) I think it is fair to say that Calvinism cannot really exist without Biblical inerrancy. Therefore if I can show that SOME Biblical passages are incompatible with reformed theology, I will have effectively refuted it.
2) It is a common cognitive error to believe that once you have shown that something is possible, you have also shown it is not implausible. But there are many things which are logically possible but extremely unlikely.
3) I will leave aside many Calvinist proof-texts and let my readers decide by themselves if they are plausibly interpretable within an Arminian framework or if they can’t, thereby showing the existence of contradictions within the Bible.
For example, let us say that the books of Hebrew and James are incompatible with divine determinism. This leaves two possibilities:
A) the books of Paul are not at odds with Arminianism
B) the books of Paul teach Calvinism which in turn shows that Biblical inerrancy is false.
In both cases, Calvinism is wrong or utterly implausible.
4) I will use many philosophical arguments too, even though I am well aware that this won’t move hardcore fundamentalists who hold the self-refuting view that philosophy is a folly.
5) I shall also argue that Calvinism is completely unlivable. There are no true consistent Calvinists out there (even if some are dangerously close to achieving this).
6) I am going to use extremely hard words against reformed theology but I want to be clear I (try to) love all Calvinists as my fellow human beings. Therefore I won’t tolerate personal attacks against Calvinists who are going to comment on my blog, unless they behave like assholes.