I can't I can't I'm too scared

It's happening again and I can't, I can't talk somebody out of suicide I can't put the knife down I can't make them put the knife down what if I say something wrong God why is this happening why is there suicide and death all the time everywhere all the time and I need, something, what I don't know. Where does he live, I can't deal with this but if I don't he'll die and it'll be my fault I can't tell anyone and I can't talk to anyone God can someone please read this and tell me what to do because I don't know and I'm scared and I want somebody please God don't let anybody die tonight please please please don't let it be me