you are correct, that satan is a thought-form, while lucifer is an entity,but…
what if I told you that light and Lucifer are low frequency, just the highest frequency in the underworld of radio, infrared and light?
there are 4 frequency bands above light (UV, x-ray, gamma ray and "ultra" ray)
each of the frequencies is correlated to greater dimensionality and consciousness, and to the seven seals in the body
Masters have ability to operate in those frequencies/dimensions/consciousness
the correlation with the Jerusalem area is simply that there is an important dimensional gateway there used as a portal to the Earth