My oldest son has been asking me some questions that I don't know how to answer. He is autistic and he is a big worry wart. He asks me when he's going to die, when I'm going to die, what will he do in heaven, and recently he said he wants to get a big ladder that reaches heaven so he can go get his sister and his maw maw and bring them back with him. I told him they can't stay with us, that they have to stay in heaven and he asked me why? These are such heartbreaking questions and I don't know how to answer them. he has a hard time understanding things as it is. How do I explain this to him?