Revelation 17:11

And the beast which was, and is not, is himself the eighth, and is of the seven; and he goes into destruction.

Revelation 17:8

The beast which you saw was, and is not; and is about to come up out of the great deep, and to go into destruction. And those who are on the earth, whose names have not been put in the book of life from the first, will be full of wonder when they see the beast, that he was, and is not, and still will be.

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 which you saw was, and is not; and is about to come up out of the great deep, and to go into destruction. And those who are on the earth, whose names have not been put in the book of life from the first, will be full of wonder when they see the beast, that he was, and is not, and still will be.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain