After some help (thanks guys :)), I changed the rendering.
KAI MH FOBEISQE APO TWN APOKTENNONTWN TO SWMA THN DE
YUXHN MH DUNAMENWN APOKTEINAI. FOBEISQE DE MALLON TON
DUNAMENON KAI YUXHN KAI SWMA APOLESAI EN GEENNA
"Stop fearing those who slay the body but are unable to kill the breath (or
'life'), but rather keep on fearing Him who is able to destroy both body
and breath (or 'life') in hell."
I'm thinking of Gen. 2:7 where body (dust) + breath (of life) = living soul
(or 'being'). Maybe this verse tells something about it... I maybe wrong
though...
How's that?-)
Timo