11 The beast that was, and is not, is himself also an eighth, and is of the seven; and he goes to destruction.
the beast is also…eighth – the Greek lacks the definite article “the” eighth because the kingdom of the beast was not consecutive to, but concurrent with the seventh kingdom, as described in verse 17.
and is one of the seven – the number of the beast, as we mentioned in Rev 13:18, is the Latin (Lateinos), “the people of the ruler to come.” This representative of the beast was the Bishop of Rome.
he goes to destruction – the figurative beast, “who was and is not” will be thrown into the lake of fire in Rev 19:20.