1 Corinthians 15:14
And if Christ be not risen, then is our preaching vain, and your faith is also vain.
Cross-reference
1 Corinthians 15:2
Parallel
1 Corinthians 15:2 warns of believing 'in vain'; this verse shows that a resurrection-less faith is exactly that.
Acts 17:31
Contrast
Acts 17:31 affirms the resurrection as God's proof—opposite to Paul's hypothetical 'if not raised.'
Acts 25:19
Historical context
Acts 25:19 records Paul's claim that Jesus is alive – the very premise Paul says makes faith not useless.
Romans 10:9
Parallel
Romans 10:9 ties salvation to belief in the resurrection – the same foundation Paul argues is essential for faith.
Galatians 2:21
Parallel
Galatians 2:21 uses the same 'if...then useless' logic about Christ's death – mirroring Paul's argument about the resurrection.