Trying to understand Easter

I have having problems understanding Easter. Mummy and dagis talk about lång (long) Friday, daddy talks about Good Friday. Is it good because it is long? I told mummy and daddy that I had to stay up late last night to make the day long. Lots of snow fell off the roof yesterday and made big booming noises as it landed on the snow on the ground. I wonder when I can get to my swings again? Daddy and I did some painting yesterday and that was lots of fun. I enjoyed it lots and hope that I can do some more today when mormor and morfar are here. I wonder when they will arrive....