Evolution is a faith among the Pagans. Why should we be discussing matters of faith?
Evolution happens to be a “faith” among a sizeable number of Christians. And before you say “they are not truly Christians or saved” ... let me say that this would be absolutely untrue!
There ARE TRUE CHRISTIANS who believe that Evolution the truth of the matter. They’re wrong of course (at least I say so) ... but they are Christians!
You’re going to have to go about this a different way with these particular “true Christians” and show them the error of their way ... but telling the they are NOT Christians is not going to do it.
As far as the liberal element of society and those “pagans” who do not believe in God anyway (or some amorphous concept of God of the “eternal universe”) ... they are a different case and a different matter in how to talk to them.