It may be argued that the resurrection of Christ is the single most important truth ever preached. It is the lynchpin of the Christian faith.
The Holy Lamb of God came into the world, lived a perfect life, showed us the Father and died for our sins on the cross, but if God did not raise Jesus from the dead, we have no compelling evidence of any of these things and no reason to get excited about them. Paul trumpets the critical importance of resurrection in his letters to the Romans (“He who raised Christ Jesus from the dead will also give life to your mortal bodies”) and the Corinthians (“If Christ has not been raised, your faith is futile and you are still in your sins”).
But we don’t have to wait for the doctrinal teaching of the epistles to understand the unique significance of Christ’s resurrection. It’s right there in the historical books of the New Testament as the central fact of apostolic doctrine, the truth that changed the world.