How do we know the doctrine of eternal punishment is true?

Scripture repeatedly addresses the reality of eternal punishment as a consequence for those who live in rejection of God. In Luke 16, the rich man's plea for relief from his torment highlights the irreversible nature of his fate, emphasizing that earthly choices have eternal ramifications. Moreover, passages such as Matthew 25:46 assert that the wicked shall go away into eternal punishment, affirming the permanence of this state. The theological understanding of eternal punishment aligns with the historic Reformed perspective that underscores God's justice and the seriousness of sin. Additionally, the parable emphasizes the sufficiency of God's revelation through Moses and the prophets, suggesting those who disregard it do so at their peril, reinforcing the doctrine's foundational truth.