I had a bad dream, That I accidently killed one of my close friend, What does that mean?

In my dream I was struggleling to take a nife away from him and all of a sudden the nife went crazy and then he was dead, And his mother was crying and was very disapointed in me and his father dint even talk to me and I was crying in my dream I was very upset but then later in the dream, I dont know how but we ended up at a amusment park were we both worked and they resurrected him for 500 dollars and I was happy and I apologized and he acepted but he said the resurrection only last 5 days and he was going to parish again. So it may me feel even worst the I woke up scared and with tears in my eyes. It was a very scary dream so I called him and tol him about it because I dint want it to be true lol but he was upset that I had killed him but I told him it was just a dream but he still was upset maybe he thought just the thought of me doing such a thing would have a meaning. I want to know what this weird dream is about??? help pllease any answer is a good one thanx...