Another important point from Allister McGrath:
Christianity is not just about the historical fact that Jesus was crucified; it is about the astonishing and thrilling truth that he died in order that we might be forgiven. Paul makes a clear distinction between the event of the death of Christ and the significance of this event. That Christ died is a simple matter of history; that Christ died for our sins is the gospel itself.
[1] Allister McGrath, I Believe: Exploring the Apostles’ Creed (Downers Grove, Illinois, 1997), Kindle, 59.