Q&A: Sin unto death in 1 John 5 — physical death (unrepentant sin) or spiritual death (apostasy)

1 John 5:16-17 distinguishes sin that leads to death from sin that does not. Mike presents two interpretive options hinging on what "death" means: (1) Physical death — unrepentant sin that results in physical death, whether through divine judgment or natural consequences; (2) Spiritual death — apostasy, denial of Christ, turning away from him entirely. Mike acknowledges uncertainty and goes back and forth on the passage.