99. That this union is reciprocal is clearly evident from the following passages in the Word:
Philip, believest thou not that I am in the Father and the Father in Me? Believe Me, that I am in the Father and the Father in Me (John 14:10, 11).
That ye may know and believe that the Father is in Me and I in the Father (John 10:36, 38).
That they all may be one, as Thou, Father, art in Me and I in Thee (John 17:21).
Father, all things that are Mine are Thine, and all things that are Thine are Mine (John 17:10).
The union is reciprocal, because no union or conjunction between two persons is possible unless each in turn approached the other. In the whole heaven, and in the whole world, and in the entire man, all conjunction has its source in the reciprocal approach of one to another, each then willing in oneness with the other. From this comes homogeneity and sympathy, also unanimity and concord, in every particular of each. In every man there is such a reciprocal conjunction of soul and body; such is the conjunction of the spirit of man with the sensory and motor organs of his body; such is the conjunction of the heart and the lungs; such is the conjunction of the will and the understanding; such is the conjunction in man of all the members and viscera in themselves and with each other; the minds of all who interiorly love each other are so conjoined, for this conjunction is inscribed upon all love and friendship; since love desires to love and be loved. Of all things in the world that are fully conjoined one to the other there is a reciprocal conjunction. There is a like conjunction of the sun's heat with the heat of wood and mineral, of vital heat with the heat of all the fibers of animate things, of the soil with the root, through the root with the tree, and through the tree with the fruit; a like conjunction of the magnet with iron; and so on. Unless conjunction is effected by the reciprocal and mutual approach of one to another, no internal but only external conjunction is effected, and this in time is dissolved by mutual consent, sometimes even so far that they no longer recognize each other.