Why do some people believe they are bipartite?

Why do some have no faith to believe we have a spirit, soul and body?

For the word of God [is] quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and [is] a discerner of the thoughts and intents of the heart. (Heb. 4.12).

And the very God of peace sanctify you wholly; and [I pray God] your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. (1 Thess. 5.23).

As we study various Scriptures we discover that the spirit has the functions of intuition, communion and conscience, which is our inner man where we have God-consciousness.

We find the soul is different, for it has the functions of mind, will and emotion, and is our self-consciousness. It is our outer man along with our body.

Our body is our world-consciousness which we make contact the world with in its sensings.

We must ask the question why would someone confuse their spirit for their soul? Obviously, for one reason, the Holy Spirit has not divided them to know what is of the spirit and what is of the soul to walk after the spirit life and not soulically smothering the spirit. But why?

The conclusion that deeper spiritual Christians come to is that the fleshly believer needs deliverance.

Or, as is often the case, the unsaved tare (nominal believer) does not have the capacity to know this because their conscience is dead to God, not having been quickened by the Holy Spirit into the new creation. Thus,

And we impart this in words not taught by human wisdom but taught by the Spirit, interpreting spiritual truths to those who possess the Spirit (1 Cor. 2.13).

For the most indepth work every done on the dividing of spirit, soul and body see The Spiritual Man (CFP white covers only) by Watchman Nee. http://www3.telus.net/trbrooks/spiritsoul.htm