A further line of reasoning links an eternal consequence to the continuing nature of the unbeliever's commitment, while distinguishing a sinful believer whose underlying faith remains.
The duration of a belief, the occurrence of an act, and the duration of punishment are not logically identical matters. A permanent punishment may be established by revelation, but its precise duration cannot simply be derived by counting the moments during which the offense occurred.
That is why warnings about a believing sinner and the scope of divine will require separate examination.