1 Corinthians 15:4 declares Christ was raised on the third day — the very fact Paul uses to counter the hypothetical in this verse.

1 Corinthians 15:29 argues from baptism for the dead that resurrection is real — another implication of the same 'if no resurrection' logic.

Romans 8:11 affirms that God raised Christ and will raise believers — directly supporting the premise that Christ's resurrection is real.