Ever wondered why they call Good Friday "good" when it's the day Jesus was executed? You'd think they'd rather call Easter "Good" Sunday and call today "Black" Friday or something.
Exactly what GC said. Good Friday was the day Jesus died to take our sins from us so we could get back to God. Without His death, No-one could get to heaven at all. But what's better, is that in three days, He came back to finish what He started...