1 Corinthians 15:50–58: Why Resurrection Matters Today
Paul ties the future resurrection to present faithfulness: God will change perishable bodies at the last trumpet, and because that victory over death is certain, ordinary labor in the Lord is never wasted.
1 Corinthians 15:12–20: Why the Resurrection Matters
Paul does not treat the resurrection as one doctrine among many. In 1 Corinthians 15:12–20 he follows the logic of denial to its bleak end, then declares that Christ has been raised as the first fruits of those who sleep.