I authored this about nine years ago or so. It’s from my Doctrinal Statement. It contains some Greek, so you may need to install some fonts if letters don’t display correctly. As a language student, I opted to use a more distinguishable method of transliteration.
The “soul” (pseuchae/ψευχη) is redeemable (James 1:21) though sin lives in the “flesh”/physical body (sarx/σαρχ) (Romans 7:18-19). A spirit is not necessarily a being, it can be an emotion or atmosphere—“spirit of hate/joy [or something else positive or negative]” —(Jb 20:3, Pr 1:23, Is 4:4; 28:6, 57:15; 61:3, Hos 4:12, Rom 8:15a, 15b, 1 Cor 4:21, 2 Cor 4:13, Gal 6:1, Eph 1:17, 2 Tm 1:7, 1 Jn 4:6) “Spirit” (pneuma/πνευμα) also means “wind” in almost every sense, and is even taught in this way by Christ (John 3:8). The “soul” (pseuchae/ψευχη) is never referred to in any of these ways, but it is redeemable (as mentioned in James 1:21) and therefore eternal. “Soul” (pseuchae/ψευχη) and “spirit” (pneuma/πνευμα) are also contrasted against each other in Hebrews 4:12. “Unclean spirits” (Mt 10:1, 12:43; Mk 1:23, 26, 27, 3:11, 30, 5:2, 8, 13, 6:7, 7:25, 9:25; Lk 4:36, 6:18, 8:29, 9:42, 11:24) are never called “unclean souls”; “soul” (pseuchae/ψευχη) is always, then, a reference to the eternal and religious aspect of a human. A disembodied spirit (understood to be a ‘self-conscious being’) is always a reference to something “not human”. The “spirit” (pneuma/πνευμα) of a human, then, means more of a changing aspect, kind of like an “emotional wind” that comes from a person. The Lord’s own Spirit is the Holy Wind.