I had a conversation with a protestant friend of mind and we began talking about regenerative baptism. He mentioned something about two forms of the word baptism, baptisa and baptiso (I could have these wrong). He said they are used in such a way to suggest that there really is no regenerative baptism.
Frankly, it has been almost a year since we talked and I don’t really remember his theory. If this is a common protestant argument and you know how it goes, please explain. And how do I debunk it? Thanks. Sorry for the rather vague question.