It is my impression, that Christianity inherited a lot of the dualism of the body from Plato, and to me it appears that this is where the teaching of man’s soul comes from. The OT seems more holistic… or perhaps even materialistic.
The OT could be read as if man was nothing but his body, the breath of God being simply breath etc. Further, the OT speaks mainly of material peace, justice, riches etc. for those that trust in God.
Of course this may have to do with “development of doctrine”, but wouldn’t that make Plato a sort of prophet? Although the Church didn’t accept Platonism in its entirety, it seems to rely a lot on Platonism (especially in the earlier centuries).
The idea for instance, that the soul can live without a body… wouldn’t it be considered folly by for instance Abraham?