As the original murderer, thief, liar, deceiver; he'll find out that rebellion breeds rebellion; all his demons want to replace HIM as top dog. This is why Jesus said : "a house divided cannot stand". This satan=hate/jesus=love relationship has a basis in atomic physics. The Pauli Exclusion Principle says that in any given atom each electron(a fermion)has to have a different n, l, m or s number(principle, line, magnetic, spin). This "stacking/pecking order" principle defines how chemical elements are built up from hydrogen, helium, etc. This is the Quantum Mechanical basis for HATE, UNIQUENESS; which explains most of the facts of the world. The Bose Inclusion Principle says that with n number of bosons(photons of light/EM spectrum)in a given state there is an n+1 enhancement factor for the next boson to join that state. You see this in the lasar, birds of a feather flocking together, marriage...LOVE. Fermions are spin 1/2 particles, bosons are spin 1 particles, thus 1/2+1/2=1 or 1F+1F=1B. Fermions interfere with amplitude direct minus amplitude exchanged while bosons interfere with amplitude direct PLUS amplitude exchanged, in wave statistics. Thus fermions LIKE to go into individual states and WAR with each other(satan)whereas bosons LIKE to get into the same state of love(jesus). So, although bose interactions start out weaker, as the bose-love force grows it becomes all powerful(a house united)vs the seemingly powerful but dissipated fermi-force(a house divided). Which (QM) house do you choose to join?
I believe he said it to counter a charge that he was on the same side as the demons. I don't think he was necessarily saying that the demons' house was divided.