Revelation 17:13

These have one mind, and they give their power and authority unto the beast.

And these give their power and authority to the beast ... This would appear to be an accurate picture of Medieval times, long after the fall of Rome, and during the ascendancy of the seventh head (The Man of Sin, etc.), during which the great nations that arose upon the ruins of the ancient pagan empire cooperated fully with the Apostate Power still ruling from Rome; the religious beast was actually the ruler during this period. There are many historical fulfillments of this prophecy, but the Spanish Inquisition is the classical example, and no other need be cited; but this "honeymoon" between the religious head of the beast and the "ten horn" kingdoms was prophesied not to last. It would end in a far different state of affairs (see Revelation 17:16); but this condition would continue for a long time, during which war would be waged against God and his truth.