CCC 1035

The teaching of the Church affirms the existence of hell and its eternity. Immediately after death the souls of those who die in a state of mortal sin descend into hell, where they suffer the punishments of hell, "eternal fire."⁶¹⁵ Cf. DS 76DS — Denzinger–Schönmetzer (Enchiridion Symbolorum); 409; 411; 801; 858; 1002; 1351; 1575; Paul VI, CPG # 12. The chief punishment of hell is eternal separation from God, in whom alone man can possess the life and happiness for which he was created and for which he longs.