15 The nations have fallen into the trap they manufactured; their foot is caught in the net they have hidden. 16 Yahveh has made himself known; he has brought about justice, trapping the wicked by the work of their hands. Higgaion . Selah 17 The wicked ones will die and go to Sheol –all the nations that forget God.
The unbelievers who forget God spend their lives manufacturing traps for God’s people, and all end up in God’s trap: Sheol. Sheol is the unconscious state of death. It is not a place of fire and torture. It’s a place of death and waiting in the dust for judgment day.
What the psalmist is saying is that those who spend all their lives forgetting God will experience the much longer period of being forgotten (as it were) by him as they return to the dust in Sheol. No one will escape this fate.
None of our enemies is immortal. But God has promised an immortal life for his children. The resurrection is the ultimate answer to our prayers for help.