Revelation 17:11

As for the beast that was and is not, it is an eighth but it belongs to the seven, and it goes to destruction.

Revelation 17:8

The beast that you saw was, and is not, and is about to rise from the bottomless pit and go to destruction. And the dwellers on earth whose names have not been written in the book of life from the foundation of the world will marvel to see the beast, because it was and is not and is to come.

Treasury of Scripture Knowledge

Summary

And the beast that was, and is not, even he is the eighth, and is of the seven, and goeth into perdition.

That was

Bible References

That was

Revelation 17:8
The beast that you saw was, and is not, and is about to rise from the bottomless pit and go to destruction. And the dwellers on earth whose names have not been written in the book of life from the foundation of the world will marvel to see the beast, because it was and is not and is to come.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.