The gospel is mostly a declaration of things that have happened to us. Events and happenings transpired around the shores of Galilee and near Jerusalem (now some years ago) and have had a shocking affect upon your life. You will never be the same. The important part is that they happened, and that they happened to us. Birth is like that.
A birth is something that happens to a baby, certainly not something the baby does. No one looks at the newborn and says, “Fantastic work! You did it.”
Through the turmoil, and agony, and blood of the mother a beautiful child is brought forth. The cross is like that.
We must look at the glorious suffering Christ and joyfully declare, “Fantastic work! You did it!”