In itself it is not error, but it may, like all the other faculties, be used in erroneous ways. Among the apostles, Bartholomew represents the imagination. He is called Nathanael in the 1st chapter of John, where it is recorded that Jesus saw him under the fig tree, the inference being that He discerned Nathanael's presence before the latter came into visibility. This would indicate that images of people and things are projected into the imaging chamber of the mind and that by giving them attention one can understand their relation to outer things. Mind readers, clairvoyants, and dreamers have developed this capacity to varying degree.
Forms are always manifestations of ideas.
Whoever understands this can interpret the symbols shown him in dreams and visions, but lack of understanding of this law makes one a psychic without discernment. The angels of God are spiritual forces active in the Sons of God, the spiritually quickened. The open and receptive and believing mind can see the things that take place in the Christ Mind, thus transcending the capacity of the unillumined natural man.