Luke 24:46-47 ESV
(46) and (Jesus) said to them, “Thus it is written, that the Christ should suffer and on the third day rise from the dead, (47) and that repentance and forgiveness of sins should be proclaimed in his name to all nations, beginning from Jerusalem.
1 Corinthians 15:16-20 ESV
(16) For if the dead are not raised, not even Christ has been raised. (17) And if Christ has not been raised, your faith is futile and you are still in your sins. (18) Then those also who have fallen asleep in Christ have perished. (19) If in this life only we have hoped in Christ, we are of all people most to be pitied. (20) But in fact Christ has been raised from the dead, the firstfruits of those who have fallen asleep.