Wisdom of today : a demon cannot stand the Holy Names.

"One of the nights I heard the unexpected sound of sheep and goats walking and their bells ringing in the area. This was curious as there were no longer sheep and goats in the desert at that time. Then a physical appearance of Abraham Avinu materialized. In the Kabbalistic teaching, as a test that it is not a demon, one should ask the apparition to identify itself, to repeat the name of God, and to show its feet. If it is a demon, it will vanish when a name of God is spoken. This figure identified himself as Abraham and did not vanish when the Tetragrammaton, as the name of God, was pronounced; and his feet were human feet. Abahram didn't say anything else but directly but directly filled me with his ignited soul-fire, his full love, compassion, spiritual warrior essence, and the spiritual courage to walk before God as a blessing to humanity as he had done. It was an extraordinarily powerful transformative experience and blessing to become one with his spirit."

Source: Gabriel Cousens, Into the nothing, A spiritual Autobiography.