If God says something and we refute it, God is the one who is telling the truth. Challenges the very existence of truth. No religion is universally or exclusively True. Religious beliefs are accidents of birth. Propose to do that the way Christ did, with questions.
Relativism is awash with inconsistency and hypocrisy.
You can't be intolerant. Intolerance is wrong. You can't hurt others. Hurting others is wrong. Those are absolutes and they thing absolutes are wrong.