I see this is a very old thread but I thought I'd make an update in case others came across it like I did. This thread came up as I was looking for the original source for two references given to me by a couple Jehavoh's Witnesses:
“There is no dichotomy [division] of body and soul in the O[ld] T[estament]. The Israelite saw things concretely, in their totality, and thus he considered men as persons and not as composites. The term nepeš [ne′phesh], though translated by our word soul, never means soul as distinct from the body or the individual person. . . . The term [psy·khe′] is the N[ew] T[estament] word corresponding with nepeš. It can mean the principle of life, life itself, or the living being.”—New Catholic Encyclopedia(1967), Vol. XIII, pp. 449, 450.
“The Christian concept of a spiritual soul created by God and infused into the body at conception to make man a living whole is the fruit of a long development in Christian philosophy. Only with Origen [died c. 254 C.E.] in the East and St. Augustine [died 430 C.E.] in the West was the soul established as a spiritual substance and a philosophical concept formed of its nature. . . . His [Augustine’s] doctrine . . . owed much (including some shortcomings) to Neoplatonism.”—New Catholic Encyclopedia (1967), Vol. XIII, pp. 452, 454.
I drove to the local university library and took a snapshot of ALL relevant pages from the 1967 edition so we can read these quotes in full context.
Here's the PDF of the relevant pages: bit.ly/1967CC4JW
I apologize there are couple pages that I didn't notice were out of focus but the vast majority is very legible.
I hope this helps future others that are researching this topic.