Calvinism derived its 3 classes ultimately from the 3 classes in Valentinian Gnosticism (see Ireneaus’ five books Against Heresies):
1. Pneumatics (spirituals) – The elect of the elect.
2. Psuchics (soulys) – The average elect.
3. Hylics (carnals) – The non-elect.
Meaning, the Hylics have no chance. As for the Psuchics, they are (as Paul Dohse puts it in his explanation of Calvinism) “entered into the race” but not given “the gift of perseverance.” And the Pneumatics, of course, are elect to the uttermost, meaning nothing they do can damn them.