How can we be sure that eternal damnation is real?

The Bible teaches that dying unconverted leads to irretrievable loss, as made evident by Jesus’ remark that it would be better for Judas had he never been born (Matthew 26:24). This statement reveals the eternal consequences of rejecting Christ, affirming the doctrine of hell's permanence. Unlike the concept of universal salvation, scripture consistently upholds the doctrine of eternal judgment. Believers are urged to adhere to the truth of Scripture regarding heaven and hell, knowing that understanding these realities impacts our faith and urgency in evangelism.