When my family first found out they were angry, but i think it was because they were upset at themselves, angry that they couldn't protect me from this. Give them time to understand that it is no one's fault and they will realise that the most they can do for you is to be there to support you. No matter what happens, family is always there, even if it might seem like theyre not. I know it's hard to say directly "hey ive been hearing voices" but you could ask them to see a doctor and explain the symptoms to the doctor or psychiatrist. And then the doctor will tell them what's going on, so it should be a bit easier for them and yourself that way. Im here to answer questions if i can .I hope this helps, and best of luck for you.