The heart, according to the Biblical concept, is the conscience of man’s spirit plus the mind in man’s soul. The spirit communes with God and is the organ for knowing His will, whereas the heart is the steward of the spirit, working towards the expression of all which is in the spirit. Whatever is in the spirit is expressed through the heart. The heart is therefore the link or the place of exchange for the workings of the spirit and of the soul. It is like the operating center of a telephone system where all the lines will converge and be connected. All that enters the spirit enters from the heart. Hence the heart is the connecting point of all communications. The spirit reaches the soul via the heart; and through the heart the soul conveys to the spirit what it has gathered from outside. The heart is where our personality is located. It is our real self. Since it is the link between the spirit and the soul, the heart may be considered as the real “I”. Watchman Nee, Spiritual Knowledge.