I cannot imagine a situation in which taking a overly sensitive 7 year old to a funeral home would be beneficial. .

I really like Karen's idea, about Heaven, about the love, that your father will no longer be in pain, and that we will see our loved ones again at some time. My friend just went through this with her two young children, their dad died. She took them to hospice, and the older one (8) reacted a bit negatively to the situation, and was withdrawn. So, you know your child best, and you might want to talk to/with a mental health counselor concerning this. Maybe talk to your son, around the topic, and see how he responds? IDK, it is hard enough for me, at 43 to "accept" death or understand death.