1 Corinthians 15:14

14ifεἰthenδὲChristΧριστὸςnotοὐκhas been raisedἐγήγερται,[is] voidκενὸνthenἄραtheτὸpreachingκήρυγμαof usἡμῶν,voidκενὴalsoκαὶtheἡfaithπίστιςof youὑμῶν,

And if Christ has not been raised, then also our preaching [is] void, and your⁺ faith [is] void.