Not all the thought forms, communications and impressions that assail you—and are received by you—can be depended upon to be accurate, truthful and just.
First, because these may arrive in part from different minds, and from both the Spiritual and the physical worlds.
Second, because there are malicious, mischievous and evil lives in both these worlds, and you may be receiving from any one of these lives or worlds—and from a number of both at the same time.
The atmosphere of our terrestrial globe is teeming with thought forms and impressions of every conceivable kind, which are travelling at every conceivable rate of vibration per second, and you must continually be assailed by such of these thought forms and impressions as are attuned to your rate of vibration.
In cases of physical illness and abnormal physical condition, your mind may change its rate of vibration rapidly, both upward and downward, in the scale of vibratory activity.
Therefore, such a mind may receive a very miscellaneous collection of messages, ranging from those of the higher spiritual zones downward to those of earth life of the evilest nature.
All evil thought forms, impressions and messages vibrate less rapidly than those that come from a more lofty height in spiritual evolution or life.
Benjamin F. Woodcox, Fragments of Spiritual Knowledge Pertaining to the Spiritual World, Woodcox & Fanner, Battle Creek, Michigan, 1923