What happens to people who cannot understand the gospel?

This applies the same reasoning discussed regarding young children to anyone whose cognitive capacity, at any age, genuinely prevents them from understanding and consciously responding to the gospel—not a separate, unrelated question, but the same underlying principle applied more broadly.

Christian teaching consistently holds that moral responsibility requires a genuine capacity to understand and choose. Scripture describes accountability in terms of what someone actually knew and was capable of grasping, not a blanket standard applied identically regardless of real cognitive ability.

Most Christian traditions extend the same confidence offered regarding children who die young to anyone in this situation—trusting God's justice and mercy to account fairly for a genuine, real inability to understand, rather than treating limited capacity as equivalent to willful rejection. This is a matter of trusting God's character described throughout Scripture as both perfectly just and abounding in mercy, even where Scripture doesn't spell out every specific detail.