Hands up if you have heard a Calvinist say this before. I have. Ad nauseam. The argument goes like this: the Calvinist (who usually holds that saving faith was not a genuine expression of the sinner reaching out to the Saviour to be saved upon conviction of the Gospel) will tell you that if you hold to the view that your faith is actually yours, then faith becomes a good work. Since the Bible teaches that you are saved by grace through faith apart from works, the non-Calvinist view of saving faith is considered impossible, because that would contradict the teaching of the Bible regarding the role that good works play in salvation.