1 Corinthians 15:14-20

And if Christ has not been raised, then all our preaching is useless, and your faith is useless. And we apostles would all be lying about God—for we have said that God raised Christ from the grave. But that can’t be true if there is no resurrection of the dead. And if there is no resurrection of the dead, then Christ has not been raised. And if Christ has not been raised, then your faith is useless and you are still guilty of your sins. In that case, all who have died believing in Christ are lost! And if our hope in Christ is only for this life, we are more to be pitied than anyone in the world. But in fact, Christ has been raised from the dead. He is the first of a great harvest of all who have died.