Wikipedia
https://en.m.wikipedia.org/wiki/Soul_in_the_Bible
The traditional concept of an immaterial and immortal soul distinct from the body was not found in Judaism before the Babylonian exile,[1] but developed as a result of interaction with Persian and Hellenistic philosophies.[2] Accordingly, the Hebrew word נֶ֫פֶשׁ, nephesh, although translated as "soul" in some older English Bibles, actually has a meaning closer to "living being". Nephesh was rendered in the Septuagint as ψυχή (psūchê), the Greek word for soul. The New Testament also uses the word ψυχή, but with the Hebrew meaning and not the Greek.[3]
The textual evidence indicates a multiplicity of perspectives on these issues including probable changes during the centuries in which the biblical corpus developed.[4]
Traditional Christianity
In Patristic thought, towards the end of the 2nd century, psūchê had begun to be understood in a more Greek than a Hebrew way, contrasted with the body. By the 3rd century, with the influence of Origen, the traditions of the inherent immortality of the soul and its divine nature were established.[32] As the new Encyclopædia Britannica points out: “The early Christian philosophers adopted the Greek concept of the soul’s immortality and thought of the soul as being created by God and infused into the body at conception.”[33] Inherent immortality of the soul was accepted among western and eastern theologians throughout the Middle Ages, and after the Reformation, as evidenced by the Westminster Confession.[34]