I've been trying to find this part of a message I copied recently,, I think it might explain a few things. it's from Dr. Stones testimony.
The Origin of these Messages
"While receiving these preparatory messages, it occurred to Padgett to ask how it was that Jesus had selected him to do this work, and what power, specifically, was there in the Divine Love which would enable him to succeed. Inevitably, there came the reply - in fact, one from John, the Apostle, and another from Jesus. John's message deals with the laws of report in the spirit world which enable spirits and mortals to communicate, and the workings whereby the brain of the mortal is conditioned to receive various types of messages: intellectual, moral, and soul. It is a message of great importance to those who may be interested in developing mediumship or furthering their mediumistic powers. But Jesus' reply is more direct.
The message is printed in volume I, and so may be read in its entirety. But to summarize briefly here, Jesus wrote that two things are necessary for a genuine medium to receive the messages of the Father's Truths, which were to be given shortly. First, the medium had to have thorough faith that the spirits of the Celestial Heavens, inhabitants of God's Kingdom in Immortality, were actual beings who could, if the medium achieved a certain condition of soul, actually control his brain and write through him. If the medium did not have this faith in his heart, then no contact could be made by the Celestial spirits with him. Secondly, the medium must be willing to submit to the conditions imposed by the spirits: He had to obey the instructions of the spirits and pray to the Father for His Divine Love; for it was this Love alone that had the power to transform the brain of the medium so that it could be attuned to the thoughts of the spirits. And this transformation of the brain could be achieved only through the development of his soul. By prayer, said Jesus, the Father's Love inflowing into the soul transforms the soul from the image of God (with which man was created) into the Essence of God, so that sin and error in the human soul could not exist. And the brain of the mortal, thus purified of material thoughts and manifesting in his thoughts the condition of his transformed soul, could attain that condition which corresponded to the soul condition of the spirits; and it was in that way that he could grasp their thoughts .
That was the importance of the Divine Love. Padgett, in short, had to attain, through prayer to the Father, a soul condition approaching to a degree that of the Celestial spirits in order for his brain to receive their messages.
Prayer had to be constant, for, otherwise, renewed earth plane and material thoughts would naturally reimpose their dominance, and the Love and the high soul condition would become inactive."
