This will require some explanation:
01 The 'fallen angels' in Hebrew are called "Nephilim". They exist in a timeless/spaceless environment compared to linear space/time humanity.
Their ungodly progeny bred through rape with human females in Hebrew are called "Repharim".

02 After God[יהוה] observed the atrocities of these creatures He brought about the "Flood of Noe" & wiped out their physical existence.
Since Repharim are part 'fallen angel' & part human their disembodied stayed 'earth-bound' & became the Judaeo-Christian demons & Islamic djinn.

03 Through magickal ceremonies these demons can be 'evoked' (external manifestation) with a black mirror or 'invoked' (into oneself) by pact & blood sacrifice.
The demonic essence resonates with human evil & the bond is made.
Demons cannot possess the "Body of Christ".

04 The reason for this is because disembodied demonic entities cannot possess that which they cannot resonate with (i.e an "C" tuning fork will not resonate with a "D" tuning fork).
Demons due to their dual-nature (earthly & supernatural) cannot inhabit a human for long periods.

05 The reason for this is that their 'consciousness' cannot equate to a linear space/time equivalence.
That is why possessed persons often go somnambulistic (i.e zombie) or pass out.
In electronics, if you damage or deform capacitors then the frequency of the circuit is affected.

06 Demons can be cast out from the 'possessed' by invoking the Name of God[יהוה] or Christ Jesus because this re-balances the 'human circuit' to it's fundamental frequency (i.e carrier wave).
No superimposed secondary/tertiary etc wave pattern can overcome the fundamental.

07 Matthew 8:29-31 And, behold, they cried out, saying, What have we to do with thee, Jesus, thou Son of God? art thou come hither to torment us before the time? ... So the devils besought him, saying, If thou cast us out, suffer us to go away into the herd of swine.

08 Earthly existence, just as any wavelength has a fundamental frequency. Life, if you'd oblige me, has a 'fundamental frequency' upon which everything that exists is but a type of 'super-imposition'.
Is Life a hologram? A dream? Something else?
You're guess is as good as mine.

END: Why do we sleep? Why do we dream? Where does consciousness (self-awareness) reside?

Why is this ode so globally popular?

"Row, row, row your boat, gently down the stream.
Merrily, merrily, merrily, merrily, life is but a dream."

Hopefully I'll get some good responses...