Revelation 17:11

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

Revelation 17:8

The beast, which thou sawest, was, and is not; but will rise out of the abyss, and go into perdition: and they that dwell on the earth (whose names are not written on the book of life from the foundation of the world) shall wonder, when they behold the beast that was, and is not, and yet is to 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 thou sawest, was, and is not; but will rise out of the abyss, and go into perdition: and they that dwell on the earth (whose names are not written on the book of life from the foundation of the world) shall wonder, when they behold the beast that was, and is not, and yet is to be.