1 Corinthians 15:16 states the core premise — if no resurrection, Christ isn't raised — which underlies the baptism-for-dead argument.

1 Corinthians 15:32 uses the same 'if the dead are not raised' logic to show life without resurrection is meaningless.

John 11:25 declares Jesus as the resurrection and life—the foundational hope that makes Paul's argument for baptism-for-the-dead coherent.