"I really care about this person and I'm afraid that if I dont talk to them about it now something bad will happen... ...It's not just a religous matter but also a morally straight matter. I feel as if she thinks that life doesnt matter she will treat it as such."So you're not worried about her belief or non-belief per se, but that non-belief may lead your friend to a bunch of wrong decisions and perhaps bad life situtuations?I'm similar to your friend in that I also don't "want to believe in God." (Do I, in fact, believe in God, whether I want to or not? ...Well ...I dunno, really ...I think I'm an agnostic, but I'm not sure.) But I do very strongly believe that life matters, and I have a very strong set of moral/ethical values that I do my best to live by.It seems to me that the heart of your concern is not so much what she believes as how she behaves, and that you will have better luck specific things you're afraid she might want to do. Is she depressed and saying that life (and love, rules, ideals, parents, school, etc.) doesn't matter? Or is she contemplating something like suicide or abortion?If it is suicide, then she's in such deep pain and terrible trouble that mere talk of God would be hopelessly useless, sort of like putting a band-aid on a sucking chest wound. She needs serious help and she needs it now. She needs you to tell her how sad and lonely and sick and guilty and miserable you would feel if she did away with herself; and she needs you to tell her that if she commits suicide you will personally descend into hell to find her and kick her keister all the way back to the land of the living. Then she needs you to tell her family and friends, anyone close to her to that they would mean it, to tell her both those things themselves. If there is some underlying problem that is driving her to suicidal thinking, she will need some serious help with that, too.But if it's abortion, then we're back to questions of belief: you can tell her what you think is right, but not what you think she should think. If you want to be a very good and true friend, you can listen to her without judgement when she needs to talk, and you can continue to be her friend and stand by her regardless of what she decides to do. If it's not abortion, but something else that isn't "morally straight," I guess the same advice applies. Good luck, and remember that being friends is almost always more important than being in agreement.