Philip, do you not believe that I am in the Father, and the Father in me? Believe me, I am in the Father and the Father is in me. John 14:10, 11

That you may know and believe, that the Father is in me and I in the Father. John 10:36, 38,

That all may be one, as you, Father, are in me, and I in you. John 17:21.

Father, all that is mine is yours, and all that is yours is mine. John 17:10.

The union is reciprocal, because no union or link is possible between two people unless each approaches the other. Every link throughout heaven, throughout the world and in the whole human personality, is entirely due to the reciprocal approach of each to the other, leading to a mutual identity of will. This produces similarity and sympathy, unanimity and agreement in every detail on each side.

[2] Such is the reciprocal link between soul and body in each individual; such is the link between a person's spirit and the sensory and motor organs of his body; such is the link between the heart and the lungs; such is the link between the will and the understanding; such is the link between all the members and viscera of the human body in themselves and with each other; such is the link between the minds of all who love each other deeply, for it is engraved upon every form of love and friendship, since love wants to love and be loved. There is a reciprocal link between all the things in the world which are indissolubly joined. There is a similar link between the heat of the sun and the heat of wood or stone, between the vital heat and the heat of all the fibres of living creatures. There is a similar link between the ground* and the root, and through the root with the tree, and through the tree with the fruit; there is a similar link between the magnet and the iron, and so on. If the link were not produced by a reciprocal and mutual approach of one to the other, it would be merely an outward and not an inward linking; and this in time falls apart of itself, sometimes so that the partners no longer recognise each other.

* The Latin has, apparently in error, 'the tree'.