The spirit of man is the candle of the Lord , searching all the inward parts of the belly.
It is clear from scripture that the spirit resides in the innermost part of a man, KJV refers to it as the belly, it is also referred to as the "heart", but it is clear to anyone that has operated in the spirit that the manifestation of the spirit originates in the belly. As the brain is the physical part of a man that is associated with the mind, there is a neural network in the belly--a belly brain-- that is associated with the "heart". The mind is more analytical whereas the "heart" is more emotional/intuitive, both of these comprise the soul. They communicate constantly with one another but it is clear that the "heart" contains the spirit. When one is born again we have the spirit of Christ in us, glory to God. He is like Jesus, perfectly wonderful and capable of anything, but He needs to get out through the soul, "heart" and mind, then into the body, then out to the world. As we yield everything we are to Holy Spirit in our new creation spirit we can release this life to the world. Holy Spirit is here to help us, and He is the only one that can help us overcome our infirmity (weakness) to release the life of the Spirit into the earth. This includes the fruit of the Spirit, the gifts of the Spirit, the mind of Christ, the life of God...Christ in us the hope of glory!!!
He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
Brethren there are rivers of light/life bubbling up inside--let them out by the power of Spirit!
A man's belly shall be satisfied with the fruit of his mouth; and with the increase of his lips shall he be filled.
There is definitely a feedback loop here. Because out of the abundance of the "heart"or belly the mouth speaks, but there is this feedback into the belly. When you are in the flow of the Spirit-Life of God, glory will be coming out of your mouth and you will be satisfied in your inner man! Hallelujah!!!