“He claims to be a Christian who was previously a mormon. (as I recall)
I don’t see anything but hate.”
So attacking Mormonism offends you, probably for purely political reasons. I doubt you know what Mormonism is, and I doubt you can defend Mormonism or assault attacks against Mormonism by using the words of the Bible.
Not much use of the Bible here to refute mormanism, I wouldn’t want to start a trend.
Jesus taught us to show grace and love to bring people to salvation. Perhaps you need a reference for that, but I don’t.