1 Corinthians 15:16-18

16So, if dead people never rise to a new life, then Christ himself did not rise after his death.

17And if Christ did not rise, then you have believed a false message. God would still say that you are guilty, because of your sins.

18Also, think about those people who believed in Christ but they have already died. If dead people do not rise to a new life, those people would have no life with God.