(12) The beast that thou sawest (13) was, and is not; and (14) shall ascend out of the bottomless pit, and go into perdition: and they that dwell on the earth shall wonder, whose names were not written in the book of life from the foundation of the world, (15) when they behold the beast that was, and is not, and yet is.
(12) The story of the beast has a triple description of him. The first is a distinction of this beast from all that ever have been at any time: which distinction is contained in this verse: The second is a delineation or painting out of the beast by things present, by which he might even at that time be known by the godly: and this delineation is according to his heads in (Revelation 17:12-14). This beast is that empire of Rome, of which I spoke in See Revelation 13:11 according to the mutations and changes of which then had already happened, the Holy Spirit has distinguished and set out the same. The apostle distinguishes this beast from all others in these words "the beast which thou saw, was and is not." For so I expound the words of the apostle for the evidence's sake, as I will further declare in the notes following.
(13) The meaning is, that beast which you saw before in (Revelation 13:1) and which you have now seen, was (was I say) from Julius Caesar in respect to beginning, rising up, station, glory, dominion, manner and family, from the house of Julius: and yet is not now the same, if you look to the house and family: for the dominion of this family was translated to another, after the death of Nero from that other to a third, from a third to a fourth, and so on, was varied and altered by innumerable changes. Finally, the Empire is one, as it were one beast: but exceedingly varied by kindreds, families, and persons. It was therefore (says John) in the kindred or house of Julius: and now it is not in that kindred, but translated to another.
(14) As if he should say, "Also this same that is, shall shortly not be: but shall ascend out of the depth, or out of the sea" (as was said) in (Revelation 13:1) that is, shall be a new stock from among the nations without difference and shall in the same state go to into destruction, or run and perish: and so shall successively new princes or emperors come and go, arise and fall, the body of the beast remaining still, but tossed with many frequent alterations, as no man can but marvel that this beast was able to stand and hold out, in so many mutations, verily no empire that ever was tossed with so many changes, and as it were with so many tempests of the sea, ever continued so long.